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Bauer–Furuta invariants under({mathbb{Z}_2})-actions

✍ Scribed by Nobuhiro Nakamura


Publisher
Springer-Verlag
Year
2008
Tongue
French
Weight
250 KB
Volume
262
Category
Article
ISSN
0025-5874

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Orbits of Galois Invariant n-Sets of P1
✍ Amparo López; Daniel Maisner; Enric Nart; Xavier Xarles 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 138 KB

For any "nite "eld k we count the number of orbits of galois invariant n-sets of /(k M ) under the action of PGL (k). For k of odd characteristic, this counts the number of k-points of the moduli space of hyperelliptic curves of genus g over k. We get in this way an explicit formula for the number o