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37b40(secondary)

Bulletin of the London Mathematical Society (1)

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UPPER AND LOWER BOUNDS FOR THE MINIMAL POSITIVE ENTROPY OF PURE BRAIDS
WON TAEK SONG
Journal:

Bulletin of the London Mathematical Society / Volume 37 / Issue 2 / March 2005

Published online by Cambridge University Press:

10 March 2005, pp. 224-229

Print publication:

March 2005
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In this paper, the minimal positive entropy of pure braids is shown to be greater than $\log(2+\sqrt5)$, independent of the braid index. For pure 3-braids, the minimal entropy is shown to be equal to $\log(3+2\sqrt2)$.