Residual finiteness of surface groups
Author: John Hempel
Journal: Proc. Amer. Math. Soc. 32 (1972), 323
MSC: Primary 55A05; Secondary 20J99
MathSciNet review: 0295352
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Abstract: It is known  that free groups, and more generally fundamental groups of 2-manifolds , are residually finite. We give here an elementary proof of these facts.