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Splittings of Mapping Tori of Free Group Automorphisms
Authors:Peter Brinkmann
Affiliation:(1) Department of Mathematics, University of Illinois at Urbana-Champaign, 273 Altgeld Hall, 1409 W. Green St., Urbana, IL, 61801, U.S.A.
Abstract:We present necessary and sufficient conditions for the existence of a splitting over Zopf of the mapping torus 
$$M_Phi = F times _Phi {mathbb{Z}}$$
of a free group automorphism PHgr.
Keywords:free-by-cyclic groups  free group automorphisms  splittings over   /content/g763j5nn3778v626/xxlarge8484.gif"   alt="  Zopf"   align="  BASELINE"   BORDER="  0"  >
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