View source for Milnor unknotting conjecture

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''Kronheimer–Mrówka theorem''

The unknotting number of the [[Torus knot|torus knot]] of type $(p,q)$ is equal to

$$\frac{(p-1)(q-1)}{2}.$$

The conjecture was proven by P.B. Kronheimer and T.S. Mrówka [[#References|[a1]]] and generalized to positive links (cf. also [[Positive link|Positive link]]).

See also [[Link|Link]].

====References====
<table><TR><TD valign="top">[a1]</TD> <TD valign="top">  P.B. Kronheimer,   T.S. Mrowka,   "Gauge theory for embedded surfaces I"  ''Topology'' , '''32''' :  4  (1993)  pp. 773–826</TD></TR></table>