Summary and Info
In this paper we produce an invariant for any ergodic, finite entropy action of a lattice in a simple Lie group on a finite measure space. The invariant is essentially an equivalence class of measurable quotients of a certain type. The quotients are essentially double coset spaces and are constructed from a Lie group, a compact subgroup of the Lie group, and a commensurability class of lattices in the Lie group.
More About the Author
David Fisher is a British professional writer for television. He was born in 1929.
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