P. Raickwade

works on

cone preservers 1 copositive matrices 1 linear complementarity 1 matrix theory 1 riesz* homomorphisms 1

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math.FA2026

Riesz* Homomorphisms on the copositive Cone

Pavankumar Raickwade, K. C. Sivakumar

The paper characterizes linear maps that preserve the cone of K‑copositive symmetric matrices by studying Riesz* homomorphisms, providing a representation theorem, and introducing…

math.FA2026

Positive Linear Maps on Second Symmetric Product Spaces

Pavankumar Raickwade, K. C. Sivakumar

Let $X^{(2)}$ denote the second symmetric product space of a partially ordered vector space $X$ , endowed with the projective cone. A characterization of linear maps $T\colon X^{(2)…

math.FA2026

Invertible positive maps that are not automorphism

Pavankumar Raickwade, K. C. Sivakumar

Let $X$ be a real normed vector space with a cone $K \subseteq X$ satisfying either (i) $K$ is closed with non-empty interior or (ii) $K$ has non-zero extremals or (iii) $K$ is clos…