Homotopy of a Pair of Approximately Comm
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Ola Bratteli; George A Elliott; David E Evans; Akitaka Kishimoto
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Article
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1998
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Elsevier Science
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English
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It is shown that, for a class of unital C\*-algebras including purely infinite simple C\*-algebras, real rank zero simple AT algebras, and AF algebras, if u and v are almost commuting unitaries where u has trivial K 1 -class, v has full spectrum, and a certain K 0 -valued obstruction associated to t