MathSciNet bibliographic data MR1625757 (2000c:28030) 28D99 (60A10) Hoffman, Christopher A zero entropy $T$$T$ such that the $[T,{\rm Id}]$$[T,{\rm Id}]$ endomorphism is nonstandard. Proc. Amer. Math. Soc. 128 (2000), no. 1, 183–188. Article

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