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math.GT2023
Computations on cobordism groups of projected immersions
András Csépai
We use a classifying space construction by Szűcs and Terpai to extend Salomonsen's exact sequence from cobordism groups of immersions to cobordism groups of hyperplane projections…
math.MG2023
Hyperbolic width functions and characterizations of bodies of constant width in the hyperbolic space
Károly J. Böröczky, András Csépai, Ádám Sagmeister
We discuss basic properties of several different width functions in the -dimensional hyperbolic space such as continuity, and we also define a new hyperbolic width as the extens…