A. Ryabichev

activity

20182024

h

-principle and generic maps of surfaces with prescribed singular locus

3 citations · 4 across the 7 of their papers we have counts for

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Showing 2023Show all

2 papers · 1 filter

math.GT2023

Maximal degree of a map of surfaces

Andrey Ryabichev

Given closed possibly nonorientable surfaces $M, N$ , we prove that if a map $f : M \to N$ has degree $d > 0$ , then $χ (M) \leq d \cdot χ (N)$ . We give all necessary comments on the definition…

math.HO2023

Immersions of manifolds

Andrey Ryabichev

This text is based on my talk at the popular science conference ``Dark geometry fest'' which was related to geometric methods and their applications, July 17, 2022. We will move to…