e/Kazhdan's property T

Information
has gloss	eng: In mathematics, a locally compact topological group G has property (T) if the trivial representation is an isolated point in its unitary dual equipped with the Fell topology. Informally, this means that if G acts unitarily on a Hilbert space and has "almost invariant vectors", then it has a nonzero invariant vector. The formal definition, introduced by David Kazhdan (1967), gives this a precise, quantitative meaning.
lexicalization	eng: Kazhdan's property T
lexicalization	eng: Kazhdan's property
instance of	e/Topological group