Surojit Ghosh

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20242026

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math.AT2026

Purity of quaternionic conjugation spaces

Surojit Ghosh, Ankit Kumar, Lakshit Pande

Conjugation spaces relate the cohomology of a space and its fixed points via a degree-halving isomorphism and admit a characterization in terms of homological purity. We extend thi…

math.CO2026

Minimal generating sets of transfer systems for more non-Abelian Groups

Bheemarasetty Chakravarthy, Surojit Ghosh

For a finite group $G$ , $N_{\infty}$ operads encode collections of norm maps, and by work of Blumberg--Hill and Rubin their homotopy category is equivalent to the poset of $G$ --trans…

math.AT2026

$R O (C_{p} \times C_{p})$ -graded cohomology of universal spaces and the coefficient ring

Surojit Ghosh, Ankit Kumar

We compute the $R O (C_{p} \times C_{p})$ -graded Bredon cohomology of equivariant universal and classifying spaces associated to families of subgroups, with coefficients in the constant…

math.AT2026

Bredon cohomology methods in mass partition problems on spheres

Surojit Ghosh

We apply $RO (G)$ -graded Bredon cohomology to mass assignment problems, extending classical mass partition methods. Within this framework, we reprove a recent result of Les…

Purity of quaternionic conjugation spaces

Minimal generating sets of transfer systems for more non-Abelian Groups

RO(Cp​×Cp​)-graded cohomology of universal spaces and the coefficient ring

Bredon cohomology methods in mass partition problems on spheres

$R O (C_{p} \times C_{p})$ -graded cohomology of universal spaces and the coefficient ring