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Introduction to Combinatorial Torsions (Paperback, 2001 ed.)
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Introduction to Combinatorial Torsions (Paperback, 2001 ed.)
Series: Lectures in Mathematics. ETH Zurich
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This book is an extended version of the notes of my lecture course
given at ETH in spring 1999. The course was intended as an
introduction to combinatorial torsions and their relations to the
famous Seiberg-Witten invariants. Torsions were introduced
originally in the 3-dimensional setting by K. Rei demeister (1935)
who used them to give a homeomorphism classification of
3-dimensional lens spaces. The Reidemeister torsions are defined
using simple linear algebra and standard notions of combinatorial
topology: triangulations (or, more generally, CW-decompositions),
coverings, cellular chain complexes, etc. The Reidemeister torsions
were generalized to arbitrary dimensions by W. Franz (1935) and
later studied by many authors. In 1962, J. Milnor observed 3 that
the classical Alexander polynomial of a link in the 3-sphere 8 can
be interpreted as a torsion of the link exterior. Milnor's
arguments work for an arbitrary compact 3-manifold M whose boundary
is non-void and consists of tori: The Alexander polynomial of M and
the Milnor torsion of M essentially coincide."
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