Shengkui Ye

activity

20112026

most citedEuler characteristics and actions of automorphism groups of free groups

13 citations · 43 across the 22 of their papers we have counts for

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Showing 2018Show all

2 papers · 1 filter

math.GT2018

Intersections of subcomplexes in non-positively curved 2-dimensional complexes

Feng Ji, Shengkui Ye

Let $X$ be a contractible $2$ -complex which is a union of two contractible subcomplexes $Y$ and $Z .$ Is the intersection $Y \cap Z$ contractible as well? In this note, we prove that…

math.GT2018

Topological symmetries of simply-connected four-manifolds and actions of automorphism groups of free groups

Shengkui Ye

Let $M$ be a simply connected closed $4$ -manifold. It is proved that any (possibly finite) compact Lie group acting effectively and homologically trivially on $M$ by homeomorphisms…