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Feit–Thompson theorem states that every finite group of odd order is solvable.

Its proof is near 300 pages so it is definitely not an easy paper to read without a prior knowledge about the general methods that are used in the proof and a fairly detailed sketch of the proof strategy in the hand.

What are examples of good expository papers for this theorem?

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  • $\begingroup$ The proof consists of assuming that there's a non-abelian simple group of odd order and derive a contradiction, so I removed the (rare) "solvable-groups" tag, and added the generic "gr" tag. $\endgroup$ – YCor Nov 23 '15 at 16:00
  • $\begingroup$ @YCor Thanks for your edit. By expository paper I mean something that is accessible for non-group theory specialists. I'm a geometrist but I also like exploring the other disciplines of mathematics. $\endgroup$ – user82740 Nov 23 '15 at 16:03
  • $\begingroup$ @DouglasZare Interesting post! It didn't come to my attention when I was typing this question title. $\endgroup$ – user82740 Nov 23 '15 at 16:19