Mixed tête-à-tête twists as monodromies associated with holomorphic function germs

Autor: Pablo Portilla Cuadrado, Baldur Sigurðsson
Rok vydání: 2020
Předmět:
Zdroj: Geometriae Dedicata. 210:43-64
ISSN: 1572-9168
0046-5755
DOI: 10.1007/s10711-020-00533-7
Popis: T\^ete-\`a-t\^ete graphs were introduced by N. A'Campo in 2010 with the goal of modeling the monodromy of isolated plane curves. Mixed t\^ete-\`a-t\^ete graphs provide a generalization which define mixed t\^ete-\`a-t\^ete twists, which are pseudo-periodic automorphisms on surfaces. We characterize the mixed t\^ete-\`a-t\^ete twists as those pseudo-periodic automorphisms that have a power which is a product of right-handed Dehn twists around disjoint simple closed curves, including all boundary components. It follows that the class of t\^ete-\`a-t\^ete twists coincides with that of monodromies associated with reduced function germs on isolated complex surface singularities.
Comment: 21 pages, 14 figures. Minor corrections. Version as accepted in journal. arXiv admin note: text overlap with arXiv:1706.05580
Databáze: OpenAIRE