Shi's recognition-by-spectrum conjecture for finite simple groups

Let GG be a simple group and let HH be a group. Write G|G| for the order of GG and let ω(G)\omega(G) denote the set of element orders of GG. Shi's conjecture. HGH\cong G if and only if

H=Gandω(H)=ω(G).|H|=|G|\quad\text{and}\quad\omega(H)=\omega(G).

This conjecture asserts that a finite simple group is determined up to isomorphism by its order and spectrum. The supplied text does not state whether it has been resolved.

Sources & referencesView supporting material

Primary source

Natalia V. Maslova, “On arithmetical properties and arithmetical characterizations of finite groups”, arXiv:2401.04633 (2025).

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