Quasi-cluster algebras from non-orientable surfaces
نویسندگان
چکیده
منابع مشابه
Immersions of Non-orientable Surfaces
Let F be a closed non-orientable surface. We classify all finite order invariants of immersions of F into R, with values in any Abelian group. We show they are all functions of the universal order 1 invariant that we construct as T ⊕ P ⊕Q where T is a Z valued invariant reflecting the number of triple points of the immersion, and P,Q are Z/2 valued invariants characterized by the property that ...
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ژورنال
عنوان ژورنال: Journal of Algebraic Combinatorics
سال: 2015
ISSN: 0925-9899,1572-9192
DOI: 10.1007/s10801-015-0586-1