2 papers
math.AG1998
Limit constructions over Riemann surfaces and their parameter spaces, and the commensurability group actions
Indranil Biswas, Subhashis Nag
To any compact hyperbolic Riemann surface , we associate a new type of automorphism group -- called its *commensurability automorphism group*, . The members of $ComAu…
hep-th1993
, TeichmÜller Space and Period Matrices: Canonical Mappings via String Theory
Subhashis Nag
There is a completely natural and intimate relationship between the diffeomorphism group of the circle and the Teichmüller spaces of Riemann surfaces discovered by us in 1988. Such…