Congruences modulo 4 in real enumerative geometry

From CRCG-Wiki

Speaker:

Ilia Itenberg (U Strasbourg)

Abstract:

Congruences, and in particular congruences modulo 4, play a very important role in topology of real algebraic varieties. In the talk, we will speak about congruences modulo 4 which appear in enumerative problems concerning real rational curves and will discuss tropical interpretations of these congruences.