How to classify continuous maps from 2-spheres to 2-spheres with n fixed points? – mathoverflow.net

How to classify continuous maps from 2-spheres to 2-spheres with n fixed points? – mathoverflow.net

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I am a PhD student in Physics. This problem is motivated by representing a spin-$j$ state by Majorana's stellar representation. There are $2j$ points (Majorana stars) on the two-dimensional sphere ...

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