Full text
PDF
. 1967 Jun;57(6):1573–1576. doi: 10.1073/pnas.57.6.1573
ENTROPY, A COMPLETE METRIC INVARIANT FOR AUTOMORPHISMS OF THE TORUS*
1THOMAS J. WATSON RESEARCH CENTER, YORKTOWN HEIGHTS, NEW YORK
*
The results reported in this paper were obtained in the course of research jointly sponsored by the U. S. Air Force Office of Scientific Research (contract AF 49 (638)-1682) and by IBM.
PMCID: PMC224513 PMID: 16591564