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Free Heegaard diagrams and extended Nielsen transformations. II. (English) Zbl 0404.57009

##### MSC:
 57N10 Topology of general $$3$$-manifolds (MSC2010) 20E05 Free nonabelian groups 57M40 Characterizations of the Euclidean $$3$$-space and the $$3$$-sphere (MSC2010)