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Feb 16 at 23:31 history became hot network question
Feb 16 at 21:06 comment added Daniel Asimov The skew field of quaternions contains uncountably many subfields isomorphic to the complexes. The space of such subfields is naturally homeomorphic to the real projective plane P^2.
Feb 16 at 21:03 vote accept Alborz Azarang
Feb 16 at 20:23 answer added LSpice timeline score: 4
Feb 16 at 20:20 answer added Dustin Cartwright timeline score: 8
Feb 16 at 18:37 history edited YCor
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Feb 16 at 17:09 comment added Alborz Azarang Note that if $D$ is finite or is commutative the claim is true.
Feb 16 at 15:31 history edited Alborz Azarang CC BY-SA 4.0
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S Feb 16 at 15:31 review First questions
Feb 16 at 18:50
S Feb 16 at 15:31 history asked Alborz Azarang CC BY-SA 4.0