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Chains that realize the Gromov invariant of hyperbolicmanifolds

Published online by Cambridge University Press:  01 June 1997

DOUGLAS JUNGREIS
Affiliation:
Department of Mathematics, UCLA, Los Angeles, CA 90024, USA

Abstract

For any closed hyperbolic manifold of dimension $n \geq 3$, suppose a sequence of $n$-cycles representing the fundamental homology class have norms converging to the Gromov invariant. We show that this sequence must converge to the uniform measure on the space of maximal-volume ideal simplices. As a corollary, we show that for a hyperbolic $n$-manifold $L$ ($n \geq 3$) with totally-geodesic boundary, the Gromov norm of ($L,\partial L$) is strictly greater than the volume of $L$ divided by the maximal volume of an ideal $n$-simplex.

Type
Research Article
Copyright
1997 Cambridge University Press

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