研究者詳細 - 鈴木　智成

論文 - 鈴木　智成

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Several completenesses on n-generalized metric spaces 査読有り国際誌

Suzuki T.

Bulletin of the Kyushu Institute of Technology - Pure and Applied Mathematics 2020 ( 67 ) 29 - 42 2020年01月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）

© 2020, Kyushu Institute of Technology. All rights reserved. We can consider several completenesses on n-generalized metric spaces. In this paper, we study the relationship between the completenesses. In particular, we study k-completeness.

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Several completenesses on ν-generalized metric spaces 国際誌

鈴木智成

Bulletin of the Kyushu Institute of Technology 67 29 - 42 2020年01月

完備距離空間におけるCJM縮小写像に関する不動点定理 (関数空間の一般化とその周辺)

鈴木智成

数理解析研究所講究録 ( 京都大学数理解析研究所 ) 2143 111 - 118 2019年12月

Some metrization problem on ν -generalized metric spaces 査読有り国際誌

Suzuki T.

Revista de la Real Academia de Ciencias Exactas, Fisicas y Naturales - Serie A: Matematicas 113 ( 2 ) 1267 - 1278 2019年04月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）

© 2018, Springer-Verlag Italia S.r.l., part of Springer Nature. Very recently, Dung and Hang (Rev. R. Acad. Cienc. Exactas Fis. Nat. Ser. A Math. RACSAM, https://doi.org/10.1007/s13398-017-0425-4, 2017) gave a sufficient condition for some metrization problem on ν-generalized metric spaces. Strongly motivated by their result, we give sufficient and necessary conditions on the conclusion of their theorem. We also give sufficient and necessary conditions on the assumption of their theorem. Thus we could tell that we almost complete the metrization problem on ν-generalized metric spaces with respect to their method.

DOI： 10.1007/s13398-018-0544-6

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Jachymski-matkowski-świa[ogonek]tkowski's fixed point theorem 査読有り国際誌

Suzuki T.

Applicable Analysis and Discrete Mathematics 13 ( 2 ) 632 - 642 2019年01月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）

© 2019 University of Belgrade. We improve Jachymski-Matkowski-Swiatkowski's fixed point theorem for contractions in semimetric spaces with some additional assumption. We prove another fixed point theorem for contractions.

DOI： 10.2298/AADM170430024S

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Generalizations of edelstein’s fixed point theorem in compact metric spaces 査読有り国際誌

Suzuki T.

Fixed Point Theory 20 ( 2 ) 703 - 714 2019年01月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）

© 2019, House of the Book of Science. All rights reserved. We study deeply some fixed point theorem in compact metric spaces proved very recently, generalizing this theorem. We also show this theorem is a generalization of the famous Edelstein’s fixed point theorem.

DOI： 10.24193/fpt-ro.2019.2.46

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Comments on some existence theorems of best proximity points for contractive-type mappings 査読有り

Kikkawa M., Suzuki T.

Bulletin of the Kyushu Institute of Technology - Pure and Applied Mathematics 2019 ( 66 ) 1 - 14 2019年01月

担当区分：最終著者記述言語：英語掲載種別：研究論文（学術雑誌）

© 2019, Kyushu Institute of Technology. All rights reserved. In 2010, Sadiq Basha proved two existence theorems of best proximity points for contractive-type mappings. The purpose of this paper is to clarify the mathematical structure of these theorems.

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A generalization of Hegedüs-Szilágyi’s fixed point theorem in complete metric spaces 査読有り

Tomonari Suzuki

Fixed Point Theory and Applications 2018 ( 1 ) 2018年12月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

© 2018, The Author(s). In 1980, Hegedüs and Szilágyi proved some fixed point theorem in complete metric spaces. Introducing a new contractive condition, we generalize Hegedüs-Szilágyi’s fixed point theorem. We discuss the relationship between the new contractive condition and other contractive conditions. We also show that we cannot extend Hegedüs-Szilágyi’s fixed point theorem to Meir-Keeler type.

DOI： 10.1186/s13663-017-0625-9

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Edelstein’s fixed point theorem in semimetric spaces 査読有り国際誌

Suzuki T.

Journal of Nonlinear and Variational Analysis ( Mathematical Research Press ) 2 ( 2 ) 165 - 175 2018年08月

担当区分：筆頭著者記述言語：英語掲載種別：記事・総説・解説・論説等（学術雑誌）

© 2018 Journal of Nonlinear and Variational Analysis Very recently, Kirk and Shahzad gave one open question on the Edelstein’s fixed point theorem in compact metric spaces proved in 1962. In this paper, we give a negative answer to this question. We extend the Edelstein’s theorem to semimetric spaces. We also study contractive conditions.

DOI： 10.23952/jnva.2.2018.2.05

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CiNii Research

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Fixed point theorems for single- and set-valued F-contractions in b-metric spaces 査読有り国際誌

Suzuki T.

Journal of Fixed Point Theory and Applications 20 ( 1 ) 2018年03月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）

© 2018, Springer International Publishing AG, part of Springer Nature. Very recently, Miculescu and Mihail in (J. Fixed Point Theory Appl 19:2153–2163, 2017) gave a sufficient condition for Cauchyness on sequences in b-metric spaces. In this paper, we give a weaker sufficient condition. Also, to show the new sufficient condition is reasonably weak, we give an example. Using the new sufficient condition, we prove fixed point theorems for set-valued F-contractions in complete b-metric spaces. We also prove a fixed point theorem for single-valued F-contractions in complete b-metric spaces.

DOI： 10.1007/s11784-018-0519-4

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Caristi’s fixed point theorem in semimetric spaces 査読有り

Tomonari Suzuki

Journal of Fixed Point Theory and Applications 20 ( 1 ) 2018年03月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

© 2018, Springer International Publishing AG, part of Springer Nature. We give a negative answer to one of the questions raised by Kirk and Shahzad (J Fixed Point Theory Appl 17:541–555, 2015). Motivated by this question, we prove Caristi’s fixed point theorem in (∑ , ≠) -complete semimetric spaces.

DOI： 10.1007/s11784-018-0492-y

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The strongly compatible topology on ν -generalized metric spaces 査読有り

Tomonari Suzuki

Revista de la Real Academia de Ciencias Exactas, Fisicas y Naturales - Serie A: Matematicas 112 ( 1 ) 301 - 309 2018年01月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

© 2017, Springer-Verlag Italia. In 2000, A. Branciari introduced the concept of ν-generalized metric space. In this paper, we find a topology on ν-generalized metric spaces (X, d) which fits in X very well.

DOI： 10.1007/s13398-017-0380-0

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Improvements on bogin-type fixed point theorems in complete metric spaces 査読有り国際誌

Suzuki T.

Carpathian Journal of Mathematics 34 ( 3 ) 425 - 431 2018年01月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）

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Fixed point theorems for contractions in semicomplete semimetric spaces 査読有り国際誌

Suzuki T.

Carpathian Journal of Mathematics 34 ( 2 ) 269 - 275 2018年01月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）

© 2018, SINUS Association. All rights reserved. We introduce the concept of semicompleteness on semimetric space, which is weaker than completeness. We prove fixed point theorems for contractions in semicomplete semimetric spaces. Also, we generalize Jachymski-Matkowski-Świa¸ tkowski’s fixed point theorem in semimetric spaces.

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Some comments on edelstein’s fixed point theorems in v-Generalized metric spaces 査読有り国際誌

Suzuki T.

Bulletin of the Kyushu Institute of Technology - Pure and Applied Mathematics 2018 ( 65 ) 23 - 42 2018年01月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）

© 2018, Kyushu Institute of Technology. All rights reserved. We study deeply two fixed point theorems in v-generalized metric spaces. The two theorems are generalizations of the famous, Edelstein’s fixed point theorem in compact metric spaces.

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Improvements on Bogin-type fixed point theorems in complete metric spaces 査読有り国際誌

鈴木智成

Carpathian Journal of Mathematics 34 425 - 431 2018年01月

Fixed point theorems for contractions in semicomplete semimetric spaces 査読有り国際誌

鈴木智成

Carpathian Journal of Mathematics 34 269 - 275 2018年01月

The weakest contractive conditions for Edelstein’s mappings to have a fixed point in complete metric spaces 査読有り

Tomonari Suzuki

Journal of Fixed Point Theory and Applications 19 ( 4 ) 2361 - 2368 2017年12月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

© 2017, Springer International Publishing. In this paper, we give the answer to the following problem: Let (X, d) be a complete metric space and let T be a mapping on X satisfying d(Tx, Ty) < d(x, y) for any x, y∈ X with x≠ y. Then what are the weakest additional assumptions to imply the same conclusion as in the Banach contraction principle?

DOI： 10.1007/s11784-017-0430-4

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Nadler’s fixed point theorem in ν-generalized metric spaces 査読有り

Tomonari Suzuki

Fixed Point Theory and Applications 2017 ( 1 ) 2017年12月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

© 2017, The Author(s). We extend Nadler’s fixed point theorem to ν-generalized metric spaces. Through the proof of the above extension, we understand more deeply the mathematical structure of a ν-generalized metric space. In particular, we study the completeness of the space. We also improve Caristi’s and Subrahmanyam’s fixed point theorems in the space.

DOI： 10.1186/s13663-017-0611-2

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Characterizations of contractive conditions by using convergent sequences 査読有り

Tomonari Suzuki

Fixed Point Theory and Applications 2017 ( 1 ) 2017年12月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

© 2017, The Author(s). We give characterizations of the contractive conditions, by using convergent sequences. Since we use a unified method, we can compare the contractive conditions very easily. We also discuss the contractive conditions of integral type by a unified method.

DOI： 10.1186/s13663-017-0623-y

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The strongest sequentially compatible topology on a ν-generalized metric space 査読有り国際誌

Suzuki >.

Journal of Nonlinear and Variational Analysis 1 ( 3 ) 333 - 343 2017年12月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）

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距離空間における不動点定理 (関数空間の構造とその周辺)

鈴木智成

数理解析研究所講究録 ( 京都大学数理解析研究所 ) 2041 31 - 37 2017年07月

Redefinition of τ-Distance in Metric Spaces 査読有り

Tomonari Suzuki

Journal of Function Spaces 2017 Article ID 4168486 2017年04月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

© 2017 Tomonari Suzuki.The concept of τ-distance was introduced in 2001; on the other hand, that of τ-function was introduced by Lin and Du. Strongly inspired by τ-function, we introduce a new concept, which is a very slight generalization of τ-distance and is more natural than τ-distance. So we could say that we redefine τ-distance in some sense.

DOI： 10.1155/2017/4168486

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Basic inequality on a b-metric space and its applications 査読有り

Tomonari Suzuki

Journal of Inequalities and Applications 2017 2017年01月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

© 2017, The Author(s). We first prove one of the most basic inequalities on a b-metric space. And then we prove some fixed point theorems. We also consider two similar conditions; one implies the Cauchyness on sequences but the other does not.

DOI： 10.1186/s13660-017-1528-3

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A generalization of the Banach contraction principle in noncomplete metric spaces 査読有り

Tomonari Suzuki

Filomat 31 ( 11 ) 3357 - 3363 2017年01月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

© 2017, University of Nis. All rights reserved. We give a sufficient condition on metric spaces possessing the Banach fixed point property (BFPP). Further we also give a sufficient condition on not possessing BFPP.

DOI： 10.2298/FIL1711357S

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A direct proof of some recent generalization of both Ćirić’s and bogin’s fixed point theorems 査読有り

Suzuki T.

Bulletin of the Kyushu Institute of Technology - Pure and Applied Mathematics 2017 ( 64 ) 13 - 20 2017年01月

The strongest sequentially compatible topology on a nu-generalized metric space 査読有り国際誌

鈴木智成

Journal of Nonlinear and Variational Analysis 1 333 - 343 2017年01月

Some notes on generalizations of both Ciric's and Bogin's fixed point theorems 査読有り国際誌

鈴木智成

Pure and Applied Functional Analysis 2 677 - 684 2017年01月

Every generalized metric space has a sequentially compatible topology 査読有り国際誌

鈴木智成

Linear and Nonlinear Analysis 3 393 - 399 2017年01月

Comments on some recent existence theorems of best proximity points for Kannan-type and Chatterjea-type mappings 査読有り国際誌

鈴木智成

Nihonkai Mathematical Journal 28 105 - 116 2017年01月

Completeness of 3-generalized metric spaces 査読有り

Tomonari Suzuki

Filomat 30 ( 13 ) 3575 - 3585 2016年12月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

© 2016, University of Nis. All rights reserved.We discuss the completeness of 3-generalized metric spaces. Indeed, we give a sufficient and necessary condition on that a 3-generalized metric spaces is complete.

DOI： 10.2298/FIL1613575S

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Generalizations of both Ćirić's and Bogin's fixed point theorems 査読有り

Tomonari Suzuki, Misako Kikkawa

Journal of Nonlinear and Convex Analysis 17 ( 11 ) 2183 - 2196 2016年11月

Discussion of several contractions by Jachymski’s approach 査読有り

Tomonari Suzuki

Fixed Point Theory and Applications 2016 ( 1 ) 2016:91 2016年09月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

© 2016, Suzuki.We discuss several contractions of integral type by using Jachymski’s approach. We give alternative proofs of recent generalizations of the Banach contraction principle due to Ri (Indag. Math. 27:85-93, 2016) and Wardowski (Fixed Point Theory Appl. 2012:94, 2012).

DOI： 10.1186/s13663-016-0581-9

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Numbers on diameter in ν-generalized metric spaces 国際誌

鈴木智成

Bulletin of the Kyushu Institute of Technology 63 1 - 13 2016年01月

Numbers on diameter in v-generalized metric spaces 国際誌

Suzuki T.

Bulletin of the Kyushu Institute of Technology - Pure and Applied Mathematics 2016 ( 63 ) 2016年01月

Generalizations of both Ciric's and Bogin's fixed point theorems 査読有り国際誌

鈴木智成

Journal of Nonlinear and Convex Analysis 17 2183 - 2196 2016年01月

An elementary proof of the 2-dimensional version of the Brouwer fixed point theorem

Takeuchi Y., Tuzuki T.

Bulletin of the Kyushu Institute of Technology - Pure and Applied Mathematics 61 1 - 6 2014年01月

記述言語：英語掲載種別：研究論文（学術雑誌）

We give an elementary proof of the 2-dimensional version of the Brouwer fixed point theorem. The proof can be extended to the n-dimensional version naturally. In our proof, we only use the Bolzano-Weierstrass theorem and the fact that an odd number plus an even number is odd.

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Browder's convergence for one-parameter nonexpansive semigroups 査読有り

Shigeki Akiyama, Tomonari Suzuki

Canadian Mathematical Bulletin 55 ( 1 ) 15 - 25 2012年05月

An easily verifiable proof of the Brouwer fixed point theorem

Yukio Takeuchi, Tomonari Suzuki

Bulletin of the Kyushu Institute of Technology 59 1 - 5 2012年03月

A simple proof of a Browder's type convergence theorem for infinite families of nonexpansive mappings in Banach spaces 査読有り

Tomonari Suzuki

Proceedings of the Third International Symposium on Banach and Function Spaces 3 305 - 316 2011年10月

An extension of some Kannan-type fixed point theorem involving constants 査読有り

Masato Nakanishi, Tomonari Suzuki

Proceedings of the Third International Symposium on Banach and Function Spaces 3 431 - 440 2011年10月

Fixed point theory for a class of generalized nonexpansive mappings 査読有り

J. Garcia Falset,E. Llorens Fuster,T. Suzuki

Journal of Mathematical Analysis and Applications 375 185 - 195 2011年04月

Fixed point theorems for Berinde mappings

Tomonari Suzuki

Bulletin of the Kyushu Institute of Technology 58 13 - 19 2011年03月

Takahashi's legacy in fixed point theory

Suzuki T., Lau A.

Fixed Point Theory and Applications ( Fixed Point Theory and Applications ) 2010 2010年12月

Wittmann's convergence theorem for nonexpansive mappings 査読有り

Tomonari Suzuki

Proceedings of the Sixth International Conference on Nonlinear Analysis and Convex Analysis 327 - 339 2010年12月

A fixed point theorem for some Kannan-type set-valued mappings 査読有り

Masato Nakanishi, Tomonari Suzuki

Proceedings of the Sixth International Conference on Nonlinear Analysis and Convex Analysis 249 - 255 2010年12月

Browder's convergence for (uniformly asymptotically regular) one-parameter nonexpansive semigroups in Banach spaces 査読有り

G. Lopez Acedo,T. Suzuki

Proceedings of the Ninth International Conference on Fixed Point Theory and its Applications 131 - 143 2010年11月

Browder's convergence for uniformly asymptotically regular nonexpansive semigroups in Hilbert spaces 査読有り

G. Lopez Acedo,T. Suzuki

Fixed Point Theory and Applications ( 418030 ) 1 - 8 2010年04月

Almost biased mappings and almost compatible mappings are equivalent under some condition 査読有り

T. Suzuki,H. K. Pathak

Journal of Mathematical Analysis and Applications 368 211 - 217 2010年04月

Characterizations of reflexivity and compactness via the strong Ekeland variational principle 査読有り

鈴木　智成

Nonlinear Analysis, Theory, Methods & Applications 72 ( 5 ) 2204 - 2209 2010年04月

Three existence theorems for weak contractions of Matkowski type 査読有り

T. Suzuki,C. Vetro

International Journal of Mathematics and Statistics 6 110 - 120 2010年04月

Convergence of the sequence of successive approximations to a fixed point 査読有り

鈴木　智成

Fixed Point Theory and Applications ( 716971 ) 1 - 14 2010年04月

An observation on Kannan mappings 査読有り

M. Nakanishi,T. Suzuki

Central European Journal of Mathematics 8 ( 1 ) 170 - 178 2010年04月

Some notes on the class of contractions with respect to $\tau$-distance

Tomonari Suzuki

Bulletin of the Kyushu Institute of Technology 57 9 - 18 2010年03月

Fixed point property for nonexpansive mappings versus that for nonexpansive semigroups 査読有り

鈴木　智成

Nonlinear Analysis, Theory, Methods & Applications 70 ( 9 ) 3358 - 3361 2009年04月

A new type of fixed point theorem in metric spaces 査読有り

鈴木　智成

Nonlinear Analysis, Theory, Methods & Applications 71 ( 11 ) 5313 - 5317 2009年04月

The existence of best proximity points in metric spaces with the property UC 査読有り

T. Suzuki,M. Kikkawa,C. Vetro

Nonlinear Analysis, Theory, Methods & Applications 71 2918 - 2926 2009年04月

Subrahmanyam's fixed point theorem 査読有り

鈴木　智成

Nonlinear Analysis, Theory, Methods & Applications 71 1678 - 1683 2009年04月

A generalization of Kannan's fixed point theorem 査読有り

Y. Enjouji,M. Nakanishi,T. Suzuki

Fixed Point Theory and Applications ( 192872 ) 1 - 10 2009年04月

Reich's problem concerning Halpern's convergence 査読有り

鈴木　智成

Archiv der Mathematik 92 ( 6 ) 602 - 613 2009年04月

Some notes on fixed point theorems with constants

M. Kikkawa,T. Suzuki

Bulletin of the Kyushu Institute of Technology 56 11 - 18 2009年04月

Some notes on tau-distance versions of Ekeland's variational principle

鈴木　智成

Bulletin of the Kyushu Institute of Technology 56 19 - 28 2009年04月

On the relation between the weak Palais-Smale condition and coercivity given by Zhong 査読有り

鈴木　智成

Nonlinear Analysis, Theory, Methods & Applications 68 ( 8 ) 2471 - 2478 2008年04月

w-distances and tau-distances 査読有り

鈴木　智成

Nonlinear Functional Analysis and Applications 13 ( 1 ) 15 - 27 2008年04月

Three fixed point theorems for generalized contractions with constants in complete metric spaces 査読有り

M. Kikkawa,T. Suzuki

Nonlinear Analysis, Theory, Methods & Applications 69 ( 9 ) 2942 - 2949 2008年04月

Mosco convergence of the sets of fixed points for one-parameter nonexpansive semigroups 査読有り

鈴木　智成

Nonlinear Analysis, Theory, Methods & Applications 68 ( 12 ) 3870 - 3878 2008年04月

A sufficient and necessary condition for the convergence of the sequence of successive approximations to a unique fixed point 査読有り

鈴木　智成

Proceedings of the American Mathematical Society 136 ( 11 ) 4089 - 4093 2008年04月

Browder convergence and Mosco convergence for families of nonexpansive mappings 査読有り

鈴木　智成

CUBO 10 ( 4 ) 101 - 108 2008年04月

Best proximity points for cyclic Meir-Keeler contractions 査読有り

C. Di Bari,T. Suzuki,C. Vetro

Nonlinear Analysis, Theory, Methods & Applications 69 ( 11 ) 3790 - 3794 2008年04月

On the calculation of the James constant of Lorentz sequence spaces 査読有り

K. Mitani,K. Saito,T. Suzuki

Journal of Mathematical Analysis and Applications 343 ( 1 ) 310 - 314 2008年04月

A generalized Banach contraction principle that characterizes metric completeness 査読有り

鈴木　智成

Proceedings of the American Mathematical Society 136 ( 5 ) 1861 - 1869 2008年04月

Mizoguchi-Takahashi's fixed point theorem is a real generalization of Nadler's 査読有り

鈴木　智成

Journal of Mathematical Analysis and Applications 340 ( 1 ) 752 - 755 2008年04月

Fixed point theorems and convergence theorems for some generalized nonexpansive mappings 査読有り

鈴木　智成

Journal of Mathematical Analysis and Applications 340 ( 2 ) 1088 - 1095 2008年04月

縮小写像とカナン写像の比較

M. Kikkawa,T. Suzuki

RIMS Kokyuroku 1615 126 - 134 2008年04月

Ekeland の ε変分不等式あれこれ

鈴木　智成

RIMS Kokyuroku 1615 117 - 125 2008年04月

About the James constant of absolute normed spaces II

K. Mitani,K.-S. Saito,T. Suzuki

RIMS Kokyuroku 1611 128 - 133 2008年04月

Comments on Meir-Keeler's fixed point theorem

鈴木　智成

RIMS Kokyuroku 1611 142 - 149 2008年04月

Some similarity between contractions and Kannan mappings II

M. Kikkawa,T. Suzuki

Bulletin of the Kyushu Institute of Technology 55 1 - 13 2008年04月

A definitive result on asymptotic contractions 査読有り

鈴木　智成

Journal of Mathematical Analysis and Applications 335 ( 1 ) 707 - 715 2007年04月

Some similarity between contractions and Kannan mappings 査読有り

M. Kikkawa,T. Suzuki

Fixed Point Theory and Applications 2008 ( 649749 ) 1 - 8 2007年04月

Fixed point theorems for more generalized contractions in complete metric spaces 査読有り

鈴木　智成

Demonstratio Mathematica 40 ( 1 ) 219 - 227 2007年04月

Browder's type convergence theorems for one-parameter semigroups of nonexpansive mappings in Banach spaces 査読有り

鈴木　智成

Israel Journal of Mathematics 157 239 - 257 2007年04月

Meir-Keeler contractions of integral type are still Meir-Keeler contractions 査読有り

鈴木　智成

International Journal of Mathematics and Mathematical Sciences 2007 ( 39281 ) 1 - 6 2007年04月

Moudafi's viscosity approximations with Meir-Keeler contractions 査読有り

鈴木　智成

Journal of Mathematical Analysis and Applications 325 ( 1 ) 342 - 352 2007年04月

A sufficient and necessary condition for Halpern-type strong convergence to fixed points of nonexpansive mappings 査読有り

鈴木　智成

Proceedings of the American Mathematical Society 135 ( 1 ) 99 - 106 2007年04月

Some notes on Bauschke's condition 査読有り

鈴木　智成

Nonlinear Analysis, Theory, Methods and Applications 67 ( 7 ) 2224 - 2231 2007年04月

Some remarks on a recent generalization of the Banach contraction principle 査読有り

T. Suzuki,M. Kikkawa

Proceedings of the Eighth International Conference on Fixed Point Theory and its Applications 151 - 161 2007年04月

Asymptotic contractions of integral type

鈴木　智成

Bulletin of the Kyushu Institute of Technology 54 1 - 11 2007年04月

Zhongによる弱Palais-Smale条件とcoercivityについて

鈴木　智成

RIMS Kokyuroku 1570 145 - 151 2007年04月

Halpern型イテレーションに関する2つの最近の結果

鈴木　智成

RIMS Kokyuroku 1544 49 - 56 2007年04月

Some comments about recent results on one-parameter nonexpansive semigroups

鈴木　智成

Bulletin of the Kyushu Institute of Technology 54 13 - 26 2007年04月

The set of common fixed points of a one-parameter continuous semigroup of mappings is F(T(1)) cap F(T(sqrt2)) 査読有り

鈴木　智成

Proceedings of the American Mathematical Society 134 ( 3 ) 673 - 681 2006年04月

Common fixed points of one-parameter nonexpansive semigroups 査読有り

鈴木　智成

The Bulletin of the London Mathematical Society 38 1009 - 1018 2006年04月

Characterizations of common fixed points of one-parameter nonexpansive semigroups, and convergence theorems to common fixed points 査読有り

鈴木　智成

Journal of Mathematical Analysis and Applications 324 1006 - 1019 2006年04月

The strong Ekeland variational principle 査読有り

鈴木　智成

Journal of Mathematical Analysis and Applications 320 ( 2 ) 787 - 794 2006年04月

Common fixed points of one-parameter nonexpansive semigroups in strictly convex Banach spaces 査読有り

鈴木　智成

Abstract and Applied Analysis 2006 ( 58684 ) 1 - 10 2006年04月

The set of common fixed points of a one-parameter continuous semigroup of nonexpansive mappings is F((1/2) T(1) + (1/2) T(sqrt2)) in strictly convex Banach spaces 査読有り

鈴木　智成

Taiwanese Journal of Mathematics 10 ( 2 ) 381 - 397 2006年04月

Browder's type strong convergence theorems for infinite families of　nonexpansive mappings in Banach spaces 査読有り

鈴木　智成

Fixed Point Theory and Applications 2006 ( 59692 ) 1 - 16 2006年04月

Lou's fixed point theorem in a space of continuous mappings 査読有り

鈴木　智成

Journal of the Mathematical Society of Japan 58 ( 3 ) 769 - 774 2006年04月

Fixed point theorem for asymptotic contractions of Meir-Keeler type in complete metric spaces 査読有り

鈴木　智成

Nonlinear Analysis, Theory, Methods and Applications 64 ( 5 ) 971 - 978 2006年04月

Some notes on common fixed points of one-parameter nonexpansive semigroups 査読有り

鈴木　智成

Banach and Function Spaces II 431 - 436 2006年04月

Moudafi's viscosity approximations for Lipschitzian mappings in Banach spaces 査読有り

S. Plubtieng,T. Suzuki,R. Wangkeeree

Banach and Function Spaces II 411 - 419 2006年04月

n パラメータ非拡大半群の共通不動点集合

鈴木　智成

RIMS Kokyuroku 1484 161 - 170 2006年04月

非拡大半群の共通不動点集合

鈴木　智成

RIMS Kokyuroku 1520 70 - 77 2006年04月

The James constant of 2-dimensional Lorentz sequence spaces

T. Suzuki,A. Yamano,M. Kato

Bulletin of the Kyushu Institute of Technology 53 15 - 24 2006年04月

Some notes on Meir-Keeler contractions and L-functions

鈴木　智成

Bulletin of the Kyushu Institute of Technology 53 1 - 13 2006年04月

Some notes on one and n-parameter nonexpansive semigroups

鈴木　智成

Bulletin of the Kyushu Institute of Technology 53 25 - 33 2006年04月

Characterizations of fixed points of nonexpansive mappings 査読有り

鈴木　智成

International Journal of Mathematics and Mathematical Sciences 2005 ( 11 ) 1723 - 1735 2005年04月

Contractive mappings are Kannan mappings, and Kannan mappings are contractive mappings in some sense 査読有り

鈴木　智成

Commentationes Mathematicae 45 ( 1 ) 45 - 58 2005年04月

Ume's generalization of Takahashi's nonconvex minimization theorem 査読有り

鈴木　智成

Nonlinear Functional Analysis and Applications 10 ( 4 ) 629 - 639 2005年04月

The set of common fixed points of an n-parameter continuous semigroup of mappings 査読有り

鈴木　智成

Nonlinear Analysis, Theory, Methods and Applications 63 ( 8 ) 1180 - 1190 2005年04月

Generalized Caristi's fixed point theorems by Bae and others 査読有り

鈴木　智成

Journal of Mathematical Analysis and Applications 302 502 - 508 2005年04月

Strong convergence of Krasnoselskii and Mann's type sequences for one-parameter nonexpansive semigroups without Bochner integrals 査読有り

鈴木　智成

Journal of Mathematical Analysis and Applications 305 227 - 239 2005年04月

An example for a one-parameter nonexpansive semigroup 査読有り

鈴木　智成

Abstract and Applied Analysis 2005 ( 2 ) 173 - 183 2005年04月

Strong convergence theorems for infinite families of nonexpansive mappings in general Banach spaces 査読有り

鈴木　智成

Fixed Point Theory and Applications 2005 ( 1 ) 103 - 123 2005年04月

Browder's type convergence theorems for one-parameter semigroups of nonexpansive mappings in Hilbert spaces 査読有り

鈴木　智成

Proceedings of the Fourth International Conference on Nonlinear Analysis and Convex Analysis 599 - 607 2005年04月

Krasnosel'skiui - Mann 型点列について

鈴木　智成

RIMS Kokyuroku 1455 137 - 144 2005年04月

Counterexamples on $\tau$-distance versions of generalized Caristi's fixed point theorems

鈴木　智成

Bulletin of the Kyushu Institute of Technology 52 15 - 20 2005年04月

Caristi の不動点定理の拡張定理の別証明

鈴木　智成

RIMS Kokyuroku 1415 146 - 151 2005年04月

Strong convergence theorems of Browder's type sequences for infinite families of nonexpansive mappings in Hilbert spaces

鈴木　智成

Bulletin of the Kyushu Institute of Technology 52 21 - 28 2005年04月

Monotonically upper semicontinuity

T. Suzuki,Y. Kimura,T. Tanaka

Bulletin of the Kyushu Institute of Technology 52 29 - 34 2005年04月

Common fixed points of two nonexpansive mappings in Banach spaces 査読有り

鈴木　智成

Bulletin of the Australian Mathematical Society 69 1 - 18 2004年04月

Several fixed point theorems concerning τ-distance 査読有り

鈴木　智成

Fixed Point Theory and Applications 2004 195 - 209 2004年04月

Strong convergence of Mann's type sequences for one-parameter nonexpansive semigroups in general Banach spaces 査読有り

T. Suzuki,W. Takahashi

Journal of Nonlinear and Convex Analysis 5 209 - 216 2004年04月

Some remarks on the set of common fixed points of one-parameter semigroups of nonexpansive mappings in Banach spaces with the Opial property 査読有り

鈴木　智成

Nonlinear Analysis, Theory, Methods & Applications 58 441 - 458. 2004年04月

一般のＢＡＮＡＣＨ空間における無限個の非拡大写像族の共通不動点への収束定理

鈴木　智成

RIMS Kokyuroku 1399 71 - 75 2004年04月

Fixed point theorems for asymptotically contractive mappings 査読有り

鈴木　智成

Le Mathematiche 58 ( 1 ) 149 - 157 2003年04月

On Downing-Kirk's theorem 査読有り

鈴木　智成

Journal of Mathematical Analysis and Applications 286 453 - 458 2003年04月

On strong convergence to common fixed point of nonexpansive semigroups in Hilbert spaces 査読有り

鈴木　智成

Proceedings of the American Mathematical Society 131 2133 - 2136 2003年04月

Smothness of absolute norms on C<sup>n</sup> 査読有り

K. Mitani,K.-S. Saito,T. Suzuki

Journal of Convex Analysis 10 89 - 108 2003年04月

Convergence theorems to common fixed points for infinite families of nonexpansive mappings in strictly convex Banach spaces 査読有り

鈴木　智成

Nihonkai Mathematical Journal 14 43 - 54 2003年04月

Fixed point theorem and strong convergence theorem for one-parameter nonexpansive semigroups in general Banach spaces 査読有り

T. Suzuki,W. Takahashi

Banach and Function Spaces 345 - 357 2003年04月

Nadler's fixed point theorem with a vector-valued distance 査読有り

S. Iemoto,T. Suzuki,W. Takahashi

Proceedings of the Third International Conference on Nonlinear Analysis and Convex Analysis 107 - 114 2003年04月

Krasnoselskii and Mann's type sequences and Ishikawa's strong convergence theorem 査読有り

鈴木　智成

Proceedings of the Third International Conference on Nonlinear Analysis and Convex Analysis 527 - 539 2003年04月

一般のＢＡＮＡＣＨ空間における実数パラメータ非拡大半群の共通不動点への収束定理

T. Suzuki,W. Takahashi

RIMS Kokyuroku 1340 153 - 157 2003年04月

Strong convergence thecrem to common fixed points of two nonexpansive mappings in general Banach spaces 査読有り

鈴木　智成

Journal of Nonlinear and Convex Analysis 3 381 - 391 2002年04月

一般のＢＡＮＡＣＨ空間における非拡大写像族の共通不動点への収束定理

鈴木　智成

RIMS Kokyuroku 1246 195 - 199 2002年04月

C<sup>n</sup>上のabsolute normの微分可能性

K. Mitani,K.-S. Saito,T. Suzuki

RIMS Kokyuroku 1246 98 - 109 2002年04月

Generalized distance and existence theorems in complete metric spaces 査読有り

鈴木　智成

Journal of Mathematical Analysis and Applications 253 440 - 458 2001年04月

Weak and strong convergence theorems for nonexpansive mappings in Banach spaces 査読有り

T. Suzuki,W. Takahashi

Nonlinear Analysis, Theory, Methods & Applications 47 2805 - 2815 2001年04月

Set-Valued theoretic characterization of Stackelberg equilibrium points 査読有り

K. Sakai,S. Akashi,T. Suzuki

Proceedings of the Second International Conference on Nonlinear Analysis and Convex Analysis 443 - 449 2001年04月

ＢＡＮＡＣＨ空間の狭義凸性と非拡大写像に関する収束定理の関係

T. Suzuki,W. Takahashi

RIMS Kokyuroku 1187 2001年04月

Ｂａｎａｃｈ空間における非拡大写像の不動点への強収束定理

鈴木　智成

RIMS Kokyuroku 1136 56 - 59 2000年04月

Contractive mappings, Kannnan mappings and metric completeness 査読有り

N. Shioji,T. Suzuki,W. Takahashi

Proceedings of the American Mathematical Society 126 3117 - 3124 1998年04月

On weak convergence to fixed points of nonexpansive mappings in Banach spaces 査読有り

T. Suzuki,W. Takahashi

Nonlinear Analysis and Convex Analysis 341 - 347 1998年04月

Strong convergence theorem to common fixed points of nonexpansive semigroups{T(t) : t≧0}in Hilbert spaces

鈴木　智成

RIMS Kokyuroku 1071 112 - 115 1998年04月

Several fixed point theorems in complete metric spaces 査読有り

鈴木　智成

Yokohama Mathematical Journal 44 61 - 72 1997年04月

Fixed point theorems and characterizations of metric completeness 査読有り

T. Suzuki,W. Takahashi

Topological Methods in Nonlinear Analysis 8 371 - 382 1996年04月

Nonconvex minimization theorems and fixed point theorems in complete metric spaces 査読有り

O. Kada,T. Suzuki,W. Takahashi

Mathematica Japonica 44 ( 2 ) 381 - 391 1996年04月

Fixed point theorems in complete metric spaces

鈴木　智成

RIMS Kokyuroku 939 173 - 182 1996年04月

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