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Contributions de : Jeremy Avigad Steve Awodey John L. Bell Johan van Benthem Douglas Bridges Charles S. Chihara Mark Colyvan E. Brian Davies Michael Detlefsen Solomon Feferman Bob Hale Geoffrey Hellman Jaakko Hintikka Thomas Jech H. Jerome Keisler Ulrich Kohlenbach Penelope Madd…
Interviews of more than two dozen scholars about the philosophy of mathematics, their interests in the field, and their ideas about future developments.
The winding number is one of the most basic invariants in topology. It measures the number of times a moving point PP goes around a fixed point QQ, provided that PP travels on a path that never goes through QQ and that the final position of PP is the same as its starting positio…
The winding number is one of the most basic invariants in topology. It measures the number of times a moving point P goes around a fixed point Q, provided that P travels on a path that never goes through Q and that the final position of P is the same as its starting position. Th…
"The winding number is one of the most basic invariants in topology. It measures the number of times a moving point P goes around a fixed point Q, provided that P travels on a path that never goes through Q and that the final position of P is the same as its starting position. T…
