Marc Stephan

collaborators

2 papers

math.AC2025

Regular sequences for triangulated categories

Antonia Kekkou, Janina C. Letz, Marc Stephan

This paper systematically develops a notion of regular sequences in the context of $R$ -linear triangulated categories for a graded-commutative ring $R$ . The notion has equivalent c…

math.AT2025

Steenrod closed parameter ideals in the mod- $2$ cohomology of $A_{4}$ and $S O (3)$

Henrik RÃ¼ping, Marc Stephan, Ergun Yalcin

In this paper, we classify the parameter ideals in $H^{*} (B A_{4}; F_{2})$ and in the Dickson algebra $H^{*} (B S O (3); F_{2})$ that are closed under Steenrod operations. Consequ…

Regular sequences for triangulated categories

Steenrod closed parameter ideals in the mod-2 cohomology of A4​ and SO(3)

Steenrod closed parameter ideals in the mod- $2$ cohomology of $A_{4}$ and $S O (3)$