K. C. Sivakumar

collaborators

2 papers

math.FA2026

Riesz* Homomorphisms on the copositive Cone

Pavankumar Raickwade, K. C. Sivakumar

For a cone $K \subseteq R^{n}$ , a real symmetric matrix $A$ is called $K$ -copositive if $x^{⊤} A x \geq 0$ for every $x \in K .$ This class of matrices plays a central role in…

math.GM2024

Generalized Inverse Preservers of Hadamard Circulant Majorization

C. C. Hsu, P. R. Raickwade, K. C. Sivakumar

Let $T : M_{n} \to M_{n}$ preserve Hadamard circulant majorization. In this note, we show that this property is inherited by the three most popular generalized inverses, viz…