New contributions to semipositive and minimally semipositive matrices P Choudhury, R Kannan, K Sivakumar The Electronic Journal of Linear Algebra 34, 35-53, 2018 | 12 | 2018 |
Characterizing total positivity: Single vector tests via linear complementarity, sign non‐reversal and variation diminution PN Choudhury Bulletin of the London Mathematical Society 54 (2), 791-811, 2022 | 9 | 2022 |
Sign non‐reversal property for totally non‐negative and totally positive matrices, and testing total positivity of their interval hull PN Choudhury, MR Kannan, A Khare Bulletin of the London Mathematical Society 53 (4), 981-990, 2021 | 8* | 2021 |
Distance matrices of a tree: two more invariants, and in a unified framework PN Choudhury, A Khare European Journal of Combinatorics 115, 103787, 2024 | 5 | 2024 |
A note on linear preservers on semipositive and minimal semipositive matrices PN Choudhury, MR Kannan, KC Sivakumar arXiv preprint arXiv:1806.07168, 2018 | 3 | 2018 |
Tucker's theorem for almost skew-symmetric matrices and a proof of Farkas' lemma PN Choudhury, KC Sivakumar Linear Algebra and its Applications 482, 55-69, 2015 | 3 | 2015 |
Quadratic embedding constants of graphs: Bounds and distance spectra PN Choudhury, R Nandi Linear Algebra and its Applications 680, 108-125, 2024 | 2 | 2024 |
The blowup-polynomial of a metric space: connections to stable polynomials, graphs and their distance spectra PN Choudhury, A Khare Canadian Journal of Mathematics, 1-42, 2023 | 2 | 2023 |
Total negativity: Characterizations and single-vector tests PN Choudhury Bulletin des Sciences Mathématiques 186, 103284, 2023 | 2* | 2023 |
Interval hulls of N-matrices and almost P-matrices PN Choudhury, MR Kannan Linear Algebra and its Applications 617, 27-38, 2021 | 2 | 2021 |
On the matrix class Q0 and inverse monotonicity properties of bordered matrices PN Choudhury, N Eagambaram, KC Sivakumar, P Sushmitha Linear Algebra and its Applications 612, 206-222, 2021 | 2 | 2021 |
Algorithmic detection and construction of N-matrices PN Choudhury, MJ Tsatsomeros Linear Algebra and its Applications 602, 46-56, 2020 | 2 | 2020 |
An extension of a matrix inequality of Thompson PN Choudhury, KC Sivakumar Linear Algebra and its Applications 535, 151-159, 2017 | 2 | 2017 |
Nesbitt and Shapiro cyclic sum inequalities for positive definite matrices PN Choudhury, KC Sivakumar Advances in Operator Theory 7, 1-11, 2022 | 1 | 2022 |
Matrices with positive semidefinite real part PN Choudhury, KC Sivakumar Linear and Multilinear Algebra 69 (3), 448-470, 2021 | 1 | 2021 |
Trace inequalities for positive semidefinite matrices PN Choudhury, KC Sivakumar Discussiones Mathematicae: General Algebra & Applications 37 (1), 2017 | 1 | 2017 |
Almost definite matrices revisited K Sivakumar, A Meenakshi, P Choudhury The Electronic Journal of Linear Algebra 29, 102-119, 2015 | 1 | 2015 |
The additive-multiplicative distance matrix of a graph, and a novel third invariant PN Choudhury, A Khare arXiv preprint arXiv:2309.08691, 2023 | | 2023 |
Sign regularity: Refinement of Gantmacher-Krein-Motzkin results on variation diminution and the linear preserver problem PN Choudhury, S Yadav arXiv preprint arXiv:2307.11822, 2023 | | 2023 |
Blowup polynomials and delta-matroids of graphs PN Choudhury, A Khare Seminaire Lotharingien de Combinatoire, in press, 2022 | | 2022 |