Exercise on Maximal Group

Exercise on Maximal Group

12:30:00   Algebraic,

Well, this one is actually an old random stuff I did when I was undergraduate, I found it on my old harddrive and would like to test what happen if I post it. This is actually an exercise in Martin Isaac Book, and I always forget how to...

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23:02:00   Olimpiade Matematika,

I solved IMO problem 5 with the "density" style,  this is not that precise actual density from the topology course. High School students usually view 'dense' as "always getting somewhere in between". Note that (until this post got published) this proof is quite different from the proofs given...

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