10. Covering Space Actions; the idea of Homology - Pierre Albin

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  • čas přidán 1. 01. 2019
  • Lecture 10 of Algebraic Topology course by Pierre Albin.

Komentáře • 8

  • @swaruppaul4417
    @swaruppaul4417 Před 3 lety +24

    The idea of Homology starts at 1:00:39

  • @jackozeehakkjuz
    @jackozeehakkjuz Před 9 měsíci +1

    I think that the confusion at the beggining was caused because freedom of the action ρ is equivalent to injectiveness of the shear map, s:G×Y->Y×Y defined by s(g,y)=(gy,y).

  • @weizheniu1992
    @weizheniu1992 Před 5 lety +7

    excellent lectures!

    • @musicboxer1
      @musicboxer1 Před 4 lety +3

      Agree. Pierre Albin is an amazing teacher. I am so glad I found these lectures on CZcams!

  • @leticiazarate9553
    @leticiazarate9553 Před 2 lety +1

    😊

  • @BL-om2hn
    @BL-om2hn Před 3 lety +1

    53:50

  • @TheoremsAndDreams
    @TheoremsAndDreams Před 8 měsíci

    Starfish do not have tentacles, they have arms.