Published: 2021-12-23

A note on the boundary of the Birkhoff-James ε-orthogonality sets

Georgios Katsouleas, Vasiliki Panagakou, Panayiotis Psarrakos

32-48

Positivity of Hadamard powers of a few band matrices

Veer Singh Panwar, A. Satyanarayana Reddy

85-90

On the structure of isometrically embeddable metric spaces

Kathleen Nowak, Carlos Ortiz Marrero, Stephen Young

91-106

The Gau-Wang-Wu conjecture on partial isometries holds in the 5-by-5 case

Ilya Spitkovsky, Ibrahim Suleiman, Elias Wegert

107-113

Kronecker products of Perron similarities

Janelle M. Dockter, Pietro Paparella, Robert L. Perry, Jonathan D. Ta

114-122

On decompositions of matrices into products of commutators of involutions

Tran Nam Son, Truong Huu Dung, Nguyen Thi Thai Ha, Mai Hoang Bien

123-130

Spectral Slater index of tournaments

Abderrahim Boussaïri, Abdelhak Chaïchaâ, Brahim Chergui, Sara Ezzahir, Soufiane Lakhlifi, Soukaïna Mahzoum

170-178

Majorization inequalities via convex functions

Mohsen Kian, Mohammad Sababheh

179-194

Group inverses of matrices associated with certain graph classes

Judith McDonald, Raju Nandi, K. C. Sivakumar

204-220

Constructions of cospectral graphs with different zero forcing numbers

Aida Abiad, Boris Brimkov, Jane Breen, Thomas R. Cameron, Himanshu Gupta, Ralihe R. Villagran

280-294

Banach spaces of GLT sequences and function spaces

V. B. Kiran Kumar, Rahul Rajan, N. S. Sarathkumar

295-316

Linear maps preserving the Lorentz spectrum: the $2 \times 2$ case

María I. Bueno, Susana Furtado, Aelita Klausmeier, Joey Veltri

317-330

K-subdirect sums of Nekrasov matrices

Zhen-Hua Lyu, Xueru Wang, Lishu Wen

339-346

Compatibility and companions for Leonard pairs

Kazumasa Nomura, Paul Terwilliger

404-456

On m-th roots of complex matrices

Heguo Liu, Jing Zhao

457-462

The products of involutions in a matrix centralizer

Ralph John de la Cruz, Raymond Louis Tañedo

463-482

Jordan chains of h-cyclic matrices, II

Andrew Nickerson, Pietro Paparella

486-493

A Sylvester-Kac matrix type and the Laplacian controllability of half graphs

Milica Andelic, Carlos M. da Fonseca, Emrah Kilic, Zoran Stanic

559-571