Zobrazeno 1 - 2
of 2
pro vyhledávání: '"Jules R. Metcalf-Burton"'
Publikováno v:
Journal of Knot Theory and Its Ramifications. 25:1650046
We prove a folklore theorem of W. Thurston which provides necessary and sufficient conditions for primality of a certain class of theta-curves. Namely, a theta-curve in the 3-sphere with an unknotted constituent knot U is prime if and only if lifting
Publikováno v:
Journal of Knot Theory and Its Ramifications. 23:1450020
Three disjoint rays in euclidean 3-space form Borromean rays provided their union is knotted, but the union of any two components is unknotted. We construct infinitely many Borromean rays, uncountably many of which are pairwise inequivalent. We obtai