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math.CO2023★ 5 cited
On possible symmetry groups of 27-vertex triangulations of manifolds like the octonionic projective plane
Alexander A. Gaifullin
In 1987 Brehm and Kühnel showed that any triangulation of a -manifold (without boundary) that is not homeomorphic to the sphere has at least vertices. Moreover, triangu…
math.GR2023★ 7 cited
Classification of involutive commutative two-valued groups
Victor M. Buchstaber, Alexander A. Gaifullin, Alexander P. Veselov
A complete classification of finitely generated involutive commutative two-valued groups is obtained. Three series of such two-valued groups are constructed: principal, unipotent a…