George Markowsky
J. Math. Anal. Appl.
We give examples of homeomorphisms which are topologically 1-mixing but not topologically 2-mixing. One is a subshift and the other is a diffeomorphism of the torus. © 1978 American Mathematical Society.
George Markowsky
J. Math. Anal. Appl.
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IEEE Transactions on Pattern Analysis and Machine Intelligence
James Lee Hafner
Journal of Number Theory
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Advances in Applied Mathematics