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Normalizers of incompressible surfaces in 3-manifolds. (English) Zbl 0475.57001

##### MSC:
 57N10 Topology of general $$3$$-manifolds (MSC2010) 57M05 Fundamental group, presentations, free differential calculus 20F34 Fundamental groups and their automorphisms (group-theoretic aspects) 57M25 Knots and links in the $$3$$-sphere (MSC2010)