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SUMMARY:Tim Gräfnitz (Hamburg)
DTSTART:20210408T090000Z
DTEND:20210408T100000Z
DTSTAMP:20260423T005805Z
UID:notts_ag/52
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/notts_ag/52/
 ">Tropical correspondence for smooth del Pezzo log Calabi-Yau pairs</a>\nb
 y Tim Gräfnitz (Hamburg) as part of Online Nottingham algebraic geometry 
 seminar\n\n\nAbstract\nIn this talk I will present the main results of my 
 thesis\, a tropical correspondence theorem for log Calabi-Yau pairs $(X\,D
 )$ consisting of a smooth del Pezzo surface $X$ of degree $\\ge3$ and a sm
 ooth anticanonical divisor $D$. The easiest example of such a pair is $(\\
 mathbb{P}^2\,E)$\, where $E$ is an elliptic curve. I will explain how the 
 genus zero logarithmic Gromov-Witten invariants of $X$ with maximal tangen
 cy to $D$ are related to tropical curves in the dual intersection complex 
 of $(X\,D)$ and how they can be read off from the consistent wall structur
 e appearing in the Gross-Siebert program. The novelty in this corresponden
 ce is that $D$ is smooth but non-toric\, leading to log singularities in t
 he toric degeneration that have to be resolved.\n
LOCATION:https://researchseminars.org/talk/notts_ag/52/
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