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20002021
most citedCompact Stein surfaces with boundary as branched covers of $\B^4$

77 citations · 141 across the 18 of their papers we have counts for

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Showing 2008 · math.GTShow all

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math.GT2008

Involutions of 3-dimensional handlebodies

Andrea Pantaleoni, Riccardo Piergallini

We study the orientation preserving involutions of the orientable 3-dimensional handlebody , for any genus . A complete classification of such involutions is given in terms…

math.GT2008

Branchfolds and rational conifolds

Riccardo Piergallini, Giacomo Tomassoni

We extend the concept of orbifold to that of branchfold, in order to allow any cone singularities with rational angles, and show why branchfolds naturally fit in the theory of bran…