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--- blog:2022-12-18 [2022/12/18 16:50] – pzhou
+++ blog:2022-12-18 [2023/06/25 15:53] (current) – external edit 127.0.0.1
@@ Line 20: / Line 20: @@
 https://arxiv.org/pdf/math/0101206.pdf
+Why there are so many versions of Heegaard-Floer theory? And why there is the funny dependence on spin-c? (what is spin-c?)
+Oh, I see now.