Hao Yu

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math.GR2026

The classification of Bidihedral Groups

Hao Yu, Pengchong Zeng

A group is called bidihedral if it can be expressed as a product of two dihedral subgroups. In this paper, a complete classification for all bidihedral groups is given.

math.GR2024

On exact products of two dihedral groups

Kan Hu, Hao Yu

An exact product of two finite groups $H$ and $K$ is a finite group $X$ which contains $H$ and $K$ as subgroups, satisfying $X = H K$ and $H \cap K = {1_{X}}$ . In this paper, we provide…