DIFFEOMORPHISM GROUPS, QUANTIZATION, AND SU(∞)
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A method of relating infinite dimensional Lie algebras to basis dependent sequences of finite dimensional Lie algebras is introduced. DiffA S2 and DiffA T2 are shown to be N → ∞ limits of SU(N), with a limiting procedure, and "SU(∞)'s", that differ from the usual Kac Moody ones. After a detailed presentation of these two 'principal' examples, the general construction is outlined, which seems to work for the Poisson algebra of more or less any homogenous symplectic manifold.