University of Cambridge > > Junior Geometry Seminar > Milnor's construction of exotic 7-spheres

Milnor's construction of exotic 7-spheres

Add to your list(s) Download to your calendar using vCal

  • UserIsmael Sierra, University of Cambridge
  • ClockFriday 27 January 2023, 16:00-17:00
  • HouseMR13.

If you have a question about this talk, please contact Macarena Arenas.

An exotic n-sphere is a smooth manifold which is homeomorphic but not diffeomorphic to S^n. In this talk I will explain the first construction of such Manifolds due to Milnor in 1956. To do so, I will introduce the notion of cobordism and Pontryagin classes, and state some important results in topology such as the Hirzebruch signature theorem. Finally, if time permits I will say what is known about exotic spheres in other dimensions.

This talk is part of the Junior Geometry Seminar series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.


© 2006-2024, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity