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arXiv · 1609.05655

Welschinger invariants of Blow-ups of symplectic 4-manifolds

Yanqiao Ding·Jianxun Hu
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Abstract

Using the degeneration technique, one studies the behavior of Welschinger invariants under the blow-up, and obtains some blow-up formulae of Welschinger invariants. One also analyses the variation of Welschinger invariants when replacing a pair of real points in the real configuration by a pair of conjugated points, and reproves Welschinger's wall crossing formula.

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Yanqiao Ding, Jianxun Hu. 2016-09-19. Welschinger invariants of Blow-ups of symplectic 4-manifolds. https://arxiv.org/abs/1609.05655

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