Author:
DARCY ISABEL K.,SUMNERS DE WITT
Abstract
In order to model biological reactions, distances between knots/links based on
tangle replacement are defined. Given a tangle R, an R-move is defined as the replacement
of the zero tangle in a link L with the tangle R. The R-distance between
the link L and the link M is defined to be the minimum number of R-moves required
to change L into M where the minimum is taken over all diagrams of the link L.
A formula is given to determine when one 4-plat knot/link can be obtained from
another 4-plat via one R-move when R is a rational tangle and not equal to the
1/n tangle. The formula can also be used to find all rational tangles R for which the
R-distance between two given 4-plats is 1 except in the case R = 1/n tangle. These
results are also generalized to the case when any rational tangle P is replaced with
any rational tangle R, P not necessarily the zero tangle.
Publisher
Cambridge University Press (CUP)
Cited by
32 articles.
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