منابع مشابه
Stable Commutator Length of a Dehn Twist
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It is shown that there exists a finitely generated infinite simple group of infinite commutator width and infinite square width in which every conjugation-invariant norm is stably bounded, and in particular stable commutator length vanishes. Moreover, a recursive presentation of such a group with decidable word and conjugacy problems is constructed.
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These are notes for a lecture course given in Jussieu, Paris, July 2001. They discuss groups of symplectomorphisms of closed symplectic manifolds (M, ω) from various points of view. The first two lectures provide an overview of their algebraic, geometric and homotopy theoretic properties. Much of the recent progress in understanding the geometry and topology of these groups has come from studyi...
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ژورنال
عنوان ژورنال: Commentarii Mathematici Helvetici
سال: 2004
ISSN: 0010-2571,1420-8946
DOI: 10.1007/s00014-001-0799-0