Faculty recital series: Ketty Nez, piano, Katie Wolfe, violin, January 22, 2008

This is the concert program of the Faculty recital series: Ketty Nez, piano, Katie Wolfe, violin performance on Tuesday, January 22, 2008 at 8:00 p.m., at the Concert Hall, 855 Commonwealth Avenue. Works performed were Sonata for Violin and Piano by Ruth Crawford, "Tête à tête" by Elaine Aberdam "before" by Ketty Nez, "Insolence" by Amelia S. Kaplan, and Sonata in A minor for Violin and Piano, opus 34 by Amy Beach. Digitization for Boston University Concert Programs was supported by the Boston University Center for the Humanities Library Endowed Fund

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

Tête-à-tête graphs were introduced by N. A’Campo in 2010 with the goal of modeling the monodromy of isolated plane curves. Mixed tête-à-tête graphs provide a generalization which define mixed tête-à-tête twists, which are pseudo-periodic automorphisms on surfaces. We characterize the mixed tête-à-tête 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 tête-à-tête twists coincides with that of monodromies associated with reduced function germs on isolated complex surface singularities. Finally, using the language of plumbing calculus, we relate horizontal open book decompositions of graph manifolds with mixed tête-à-tête graphs via two algorithms