45 citations · 87 across the 13 of their papers we have counts for
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math.GT2006★ 45 cited
Closed/open string diagrammatics
Ralph M. Kaufmann, R. C. Penner
We introduce a combinatorial model based on measured foliations in surfaces which captures the phenomenology of open/closed string interactions. The predicted equations are derived…
math.GT2006
Torelli groups, extended Johnson homomorphisms, and new cycles on the moduli space of curves
S. Morita, R. C. Penner
Infinite presentations are given for all of the higher Torelli groups of once-punctured surfaces. In the case of the classical Torelli group, a finite presentation of the correspon…