Tatiana Abdelnaim

collaborators

2 papers

math.AT2026

Codimensions one and two cohomology of Hecke congruence subgroups

Tatiana Abdelnaim, Jeremy Miller

For $n \geq 1$ and $p$ a prime, the Hecke congruence subgroup $Γ_{0, n} (p) \leq SL_{n} (Z)$ is the subgroup of matrices whose first column is of the form $(*,0,\dots,0)…

math.AT2026

Top-dimensional rational cohomology of the congruence subgroup $Γ_{0, n}^{+} (p)$

Tatiana Abdelnaim

Let $Γ_{0, n}^{+} (p) \subset SL_{n} (Z)$ be the congruence subgroup of level- $p$ whose first column is of the form $(*, 0, \dots, 0)^{t} mod p$ . We prove that the top-dimens…

Codimensions one and two cohomology of Hecke congruence subgroups

Top-dimensional rational cohomology of the congruence subgroup Γ0,n+​(p)

Top-dimensional rational cohomology of the congruence subgroup $Γ_{0, n}^{+} (p)$