Michel van Garrel

activity

20152025

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Showing 2018Show all

2 papers · 1 filter

math.AG2018

Log BPS numbers of log Calabi-Yau surfaces

Jinwon Choi, Michel van Garrel, Sheldon Katz +1

Let $(S, E)$ be a log Calabi-Yau surface pair with $E$ a smooth divisor. We define new conjecturally integer-valued counts of $A^{1}$ -curves in $(S, E)$ . These log BPS numbers…

math.AG2018

Local BPS Invariants: Enumerative Aspects and Wall-Crossing

Jinwon Choi, Michel van Garrel, Sheldon Katz +1

We study the BPS invariants for local del Pezzo surfaces, which can be obtained as the signed Euler characteristic of the moduli spaces of stable one-dimensional sheaves on the sur…