Physicists show knotted cosmic strings may have dominated the early universe before collapsing to create matter—a theory ...
Two mathematicians have proved that a straightforward question—how hard is it to untie a knot?—has a complicated answer.
Mathematical quirks of our universe have led some cosmologists to wonder whether the cosmos was actually born in a black hole. Parallels in the physics of the universe and that of black holes have led ...
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