On wall-crossing invariance of certain sums of Welschinger numbers

S. Finashin ^[1] ; V. Kharlamov ^[2]
1. [1] Middle East Technical University
  
  Middle East Technical University
  
  Turquía
2. [2] University of Strasbourg
  
  University of Strasbourg
  
  Arrondissement de Strasbourg-Ville, Francia
Localización: Selecta Mathematica, New Series, ISSN 1022-1824, Vol. 29, Nº. 3, 2023
Idioma: inglés
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Resumen
- We continue our quest for real enumerative invariants not sensitive to changing the real structure and extend the construction we uncovered previously for counting curves of anti-canonical degree ≤ 2 on del Pezzo surfaces with K2 = 1 to curves of any anti-canonical degree and on any del Pezzo surfaces of degree K2 ≤ 3.