‎Debmalya Sain

572 total citations
48 papers, 212 citations indexed

About

‎Debmalya Sain is a scholar working on Mathematical Physics, Computational Theory and Mathematics and Applied Mathematics. According to data from OpenAlex, ‎Debmalya Sain has authored 48 papers receiving a total of 212 indexed citations (citations by other indexed papers that have themselves been cited), including 32 papers in Mathematical Physics, 31 papers in Computational Theory and Mathematics and 20 papers in Applied Mathematics. Recurrent topics in ‎Debmalya Sain's work include Advanced Banach Space Theory (27 papers), Optimization and Variational Analysis (16 papers) and Approximation Theory and Sequence Spaces (16 papers) ‎Debmalya Sain is often cited by papers focused on Advanced Banach Space Theory (27 papers), Optimization and Variational Analysis (16 papers) and Approximation Theory and Sequence Spaces (16 papers) ‎Debmalya Sain collaborates with scholars based in India, Spain and Japan ‎Debmalya Sain's co-authors include Kallol Paul, Pintu Bhunia, Ryotaro Tanaka, Lokenath Debnath, Sourangshu Mukhopadhyay, T. S. S. R. K. Rao, Jacek Chmieliński, Arup Chattopadhyay, Miguel Martı́n and Mohammad Sal Moslehian and has published in prestigious journals such as Journal of Mathematical Analysis and Applications, Proceedings of the American Mathematical Society and Linear Algebra and its Applications.

In The Last Decade

‎Debmalya Sain

41 papers receiving 199 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
‎Debmalya Sain India	9	145	126	95	78	49	48	212
Paweł Wójcik Poland	11	135 0.9×	108 0.9×	153 1.6×	44 0.6×	56 1.1×	52	251
Yuri Brudnyi Israel	9	132 0.9×	71 0.6×	153 1.6×	33 0.4×	75 1.5×	16	235
Aleksej Turnšek Slovenia	11	155 1.1×	94 0.7×	148 1.6×	27 0.3×	40 0.8×	23	248
José L. Ansorena Spain	10	202 1.4×	48 0.4×	180 1.9×	91 1.2×	64 1.3×	51	263
Jacek Chmieliński Poland	12	125 0.9×	85 0.7×	168 1.8×	42 0.5×	56 1.1×	34	265
Piotr Mankiewicz Poland	9	203 1.4×	46 0.4×	177 1.9×	56 0.7×	83 1.7×	29	265
Luis Rodríguez–Piazza Spain	13	246 1.7×	40 0.3×	386 4.1×	103 1.3×	83 1.7×	69	475
Szilárd Gy. Révész Hungary	9	91 0.6×	45 0.4×	165 1.7×	17 0.2×	76 1.6×	44	233
Yu. A. Brudnyi Israel	7	157 1.1×	33 0.3×	235 2.5×	54 0.7×	44 0.9×	18	287
Marek Balcerzak Poland	9	151 1.0×	61 0.5×	114 1.2×	184 2.4×	152 3.1×	55	340

Countries citing papers authored by ‎Debmalya Sain

Since Specialization

Citations

This map shows the geographic impact of ‎Debmalya Sain's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by ‎Debmalya Sain with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites ‎Debmalya Sain more than expected).

Fields of papers citing papers by ‎Debmalya Sain

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by ‎Debmalya Sain. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by ‎Debmalya Sain. The network helps show where ‎Debmalya Sain may publish in the future.

Co-authorship network of co-authors of ‎Debmalya Sain

This figure shows the co-authorship network connecting the top 25 collaborators of ‎Debmalya Sain. A scholar is included among the top collaborators of ‎Debmalya Sain based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with ‎Debmalya Sain. ‎Debmalya Sain is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Chmieliński, Jacek, et al.. (2025). Smoothness and approximate smoothness in normed linear spaces and operator spaces. Annals of Functional Analysis. 16(2).

Sain, ‎Debmalya, et al.. (2024). On local preservation of orthogonality and its application to isometries. Linear Algebra and its Applications. 690. 112–131.

Martı́n, Miguel, et al.. (2024). A numerical range approach to Birkhoff–James orthogonality with applications. Banach Journal of Mathematical Analysis. 18(2). 1 indexed citations

Paul, Kallol, et al.. (2024). Birkhoff–James Orthogonality and Geometry of Operator Spaces. 3 indexed citations

Sain, ‎Debmalya, et al.. (2024). On k-smoothness of operators between Banach spaces. Bulletin des Sciences Mathématiques. 196. 103486–103486. 1 indexed citations

Sain, ‎Debmalya, et al.. (2023). Birkhoff-James orthogonality and its local symmetry in some sequence spaces. Revista de la Real Academia de Ciencias Exactas Físicas y Naturales Serie A Matemáticas. 117(3). 1 indexed citations

Paul, Kallol, et al.. (2023). On symmetric points with respect to the numerical radius norm. Banach Journal of Mathematical Analysis. 17(4).

Chmieliński, Jacek, et al.. (2023). Approximate smoothness in normed linear spaces. Banach Journal of Mathematical Analysis. 17(3). 3 indexed citations

Sain, ‎Debmalya, et al.. (2023). Geometry of sub-algebras of $${\mathcal {H}}\text {ol}(\Gamma \cup {{\,\textrm{Int}\,}}(\Gamma ))$$ and zeros of holomorphic functions. Banach Journal of Mathematical Analysis. 17(2).

10.

Moslehian, Mohammad Sal, et al.. (2022). A generalization of the Roberts orthogonality: from normed linear spaces to $$C^*$$-algebras. Monatshefte für Mathematik. 200(3). 605–625.

11.

Sain, ‎Debmalya. (2021). On best approximations to compact operators. Proceedings of the American Mathematical Society. 149(10). 4273–4286. 6 indexed citations

12.

Chmieliński, Jacek, et al.. (2021). Local Approximate Symmetry of Birkhoffâ��James Orthogonality in Normed Linear Spaces. ePrints@IISc (Indian Institute of Science). 1 indexed citations

13.

Bhunia, Pintu, ‎Debmalya Sain, & Kallol Paul. (2020). On the Davis-Wielandt shell of an operator and the Davis-Wielandt index of a normed linear space. arXiv (Cornell University). 8 indexed citations

14.

Paul, Kallol, et al.. (2018). Approximate Birkhoff-James orthogonality and smoothness in the space of bounded linear operators. arXiv (Cornell University). 7 indexed citations

15.

Sain, ‎Debmalya, et al.. (2017). On symmetry of Birkhoff-James orthogonality of linear operators. ePrints@IISc (Indian Institute of Science). 10 indexed citations

16.

Paul, Kallol, et al.. (2017). Approximate Birkhoff-James orthogonality in the space of bounded linear operators. arXiv (Cornell University). 9 indexed citations

17.

Paul, Kallol, et al.. (2017). Symmetric properties of orthogonality of linear operators on (R^n, ||.||_1). Novi Sad Journal of Mathematics. 47(2). 41–46. 6 indexed citations

18.

Sain, ‎Debmalya, et al.. (2016). Orthogonality of bounded linear operators. Linear Algebra and its Applications. 500. 43–51. 10 indexed citations

19.

Sain, ‎Debmalya, et al.. (2015). Operator norm attainment and Birkhoff–James orthogonality. Linear Algebra and its Applications. 476. 85–97. 18 indexed citations

20.

Sain, ‎Debmalya & Kallol Paul. (2013). Operator norm attainment and inner product spaces. Linear Algebra and its Applications. 439(8). 2448–2452. 31 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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