Top Network Posts
- 128Ultrafilters and automorphisms of the complex field
- 28Is there a universal countable group? (a countable group containing every countable group as a subgroup)
- 27Computing the Galois group of a polynomial
- 27Are there countable index subrings of the reals?
- 25Can the symmetric groups on sets of different cardinalities be isomorphic?
- 24Cayley graphs of finitely generated groups
- 23On the size of balls in Cayley graphs
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