研究者詳細 - 鈴木　智成

論文 - 鈴木　智成

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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）

Scopus

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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

Scopus

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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

Scopus

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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

Scopus

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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

Scopus

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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

Scopus

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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.

Scopus

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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

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