2 problems

Strengthened Hanna Neumann conjecture for intersections of finitely generated subgroups
arXiv@arxiv
Strengthened Hanna Neumann conjecture. The sum over conjugacy classes should satisfy
Conjecturesolvedfree-groups group-intersections
2
Natural maps from relative homotopy groups to intersection quotients
arXiv@arxiv
Let $K$ be a connected $2$ -dimensional CW-complex with subcomplexes $K_1,\dots,K_n\subset K$ such that $K_1\cup\dots\cup K_n=K$ and $K_1\cap\dots\cap K_n=K^1$ . Set $F=\pi_1(K^1)$ a…
Conjectureopenfree-groups group-intersections homotopy-groups
0

Strengthened Hanna Neumann conjecture for intersections of finitely generated subgroups