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Семинар по геометрической топологии
8 февраля 2019 г. 17:00, г. Москва, Матфак ВШЭ (ул. Усачёва, 6), ауд. 212


Eliashberg's h-principle for maps with Thom-Boardman singularities – II

A. D. Ryabichev

Аннотация: In the previous talk the following theorem was formulated: A continuous map $f:M\to N$ of $n$-manifolds is homotopic to a smooth map with prescribed Thom-Boardman singularities if and only if the vector bundle $f^*(TN)$ is isomorphic to a certain vector bundle $T^\phi M$ (which we have constructed from a germ of the prescribed singularities). The plan of a proof was given.
In this talk we will see how the proof works in the case $n=2$, when $M$ and $N$ are closed surfaces. Namely, we will prove a necessary and sufficient condition for a collection of curves with marked points in $M$ to be the set of folds and cusps of some smooth map homotopic to $f$. I will remind all definitions, so this talk is supposed to be independent of the previous one.

Website: https://arxiv.org/abs/1810.00205


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