54 citations · 332 across the 64 of their papers we have counts for
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math.FA2014
Strictly convex space : Strong orthogonality and Conjugate diameters
Debmalya Sain, Kallol Paul, Kanhaiya Jha
In a normed linear space X an element x is said to be orthogonal to another element y in the sense of Birkhoff-James, written as iff …
math.FA2014
On rectangular constant in normed linear spaces
Kallol Paul, Puja Ghosh, Debmalya Sain
We study the properties of rectangular constant in a normed linear space . We prove that iff the unit sphere contains a straight…
math.FA2014★ 13 cited
Characterization of inner product spaces
Debmalya Sain, Kallol Paul, Lokenath Debnath
We prove that the existence of best coapproximation to any element of the normed linear space out of any one dimensional subspace and its coincidence with the best approximation to…