Algebra of Hurwitz numbers for seamed surfacesстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The authors define generalised Hurwitz numbers, associated to a
so-called seamed Klein surface, possibly non-orientable, and state a
theorem, relating those numbers to some Frobenius algebras described in the
paper. The seamed Klein surfaces have been introduced and studied in some
recent works on the topological field theory [see, for instance, the
authors, Sel. Math., New Ser. 12, No. 3--4, 307--377 (2006; Zbl
1158.57304)].