Indefinite Stein fillings and $$\text {PIN}(2)$$-monopole Floer homology
Indefinite Stein fillings and $$\text {PIN}(2)$$-monopole Floer homology
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不定斯坦填料和 $$ ext {PIN}(2)$$-单极弗洛尔同源
DOI:
10.1007/s00029-020-0547-y
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Lin, Francesco
中科院分区:
文献类型:
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作者:
Lin, Francesco
We introduce techniques to study the topology of Stein fillings of a given contact three-manifoldwhich are not negative definite. For example, given arational homology spherewithself-conjugate such that the reduced monopole Floer homology grouphas dimension one, we show that any Stein filling which is not negative definite hasor 2, andis determined in terms of the Frøyshov invariant. The proof of this uses-monopole Floer homology. More generally, we prove that analogous statements hold under certain assumptions on the contact invariant ofand its interaction with-symmetry. We also discuss consequences for finiteness questions about Stein fillings.