7 citations · 15 across the 5 of their papers we have counts for
5 papers · 1 filter
On the best coapproximation problem in
Debmalya Sain, Shamim Sohel, Souvik Ghosh +1
We study the best coapproximation problem in the Banach space by using Birkhoff-James orthogonality techniques. Given a subspace of , we comple…
On best coapproximations in subspaces of diagonal matrices
Debmalya Sain, Shamim Sohel, Souvik Ghosh +1
We characterize the best coapproximation(s) to a given matrix out of a given subspace of the space of diagonal matrices , by using Birkhoff-Ja…
On isosceles orthogonality and some geometric constants in a normed space
Debmalya Sain, Souvik Ghosh, Kallol Paul
We study the James constant , an important geometric quantity associated with a normed space , and explore its connection with isosceles orthogonality…
On some special subspaces of a Banach space, from the perspective of best coapproximation
Shamim Sohel, Souvik Ghosh, Debmalya Sain +1
We study the best coapproximation problem in Banach spaces, by using Birkhoff-James orthogonality techniques. We introduce two special types of subspaces, christened the anti-copro…
On T-orthogonality in Banach spaces
Debmalya Sain, Souvik Ghosh, Kallol Paul
Let be a Banach space and let be the dual space of For is said to be -orthogonal to if where…