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show/hide this revision's text 3 link to http://physics.stackexchange.com/questions/46284/homotopy-pi-4su2-z-2

I am a physics student, recently I read a paper using Homotopy $\pi_4(SU(2))=Z_2$, I guess mathematicians have some visualization or explanation of this result. So I come here ask for help.

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Homotopy $\Pi_4(SU(2))=Z_2$\pi_4(SU(2))=Z_2$

I am a physics student, recently I read a paper using Homotopy $\Pi_4(SU(2))=Z_2$, \pi_4(SU(2))=Z_2$, I guess mathematicians have some visualization or explanation of this result. So I come here ask for help.

show/hide this revision's text 1

Homotopy $\Pi_4(SU(2))=Z_2$

I am a physics student, recently I read a paper using Homotopy $\Pi_4(SU(2))=Z_2$, I guess mathematicians have some visualization or explanation of this result. So I come here ask for help.