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seen Dec 16 at 16:01

Per aspera ad astra.


Dec
9
awarded  Caucus
Oct
26
accepted Is it a wrong exercise in Pinter's Algebra?
Oct
26
comment Is it a wrong exercise in Pinter's Algebra?
No, this question is supposed to be proved.
Oct
26
revised Is it a wrong exercise in Pinter's Algebra?
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Oct
26
revised Is it a wrong exercise in Pinter's Algebra?
added 2 characters in body
Oct
26
asked Is it a wrong exercise in Pinter's Algebra?
Oct
17
comment Solving an exercise in Pinter's Abstract Algebra
I still don't see how to show that for any $x \in H$, there is $y \in H$ such that $aya^{-1} = x$ (given that $aka^{-1} \in H$ for any $k \in H$).
Oct
17
revised Solving an exercise in Pinter's Abstract Algebra
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Oct
17
revised Solving an exercise in Pinter's Abstract Algebra
edited body
Oct
17
asked Solving an exercise in Pinter's Abstract Algebra
Oct
4
awarded  Popular Question
Sep
24
awarded  Autobiographer
Sep
2
awarded  Teacher
Aug
31
accepted Define finite ordered set using nested tuples
Aug
31
revised Define finite ordered set using nested tuples
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Aug
28
comment Define finite ordered set using nested tuples
@AsafKaragila: Baby Jech is "Introduction to Set Theory," when Papa Jech is "Set Theory." I have just coined this names :)
Aug
28
comment Define finite ordered set using nested tuples
@AsafKaragila: You sound like you know where it is from (it is from Baby Jech). Actually I have to solve this problem, the author provides a long hint for this exercise. I didn't read the hint when I asked this question, but then I read it because I was confused. Or you want to say that if there is a hint, you must read it. I choose to try to solve a problem before reading the hint.
Aug
28
revised Define finite ordered set using nested tuples
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Aug
28
answered Define finite ordered set using nested tuples
Aug
28
revised Define finite ordered set using nested tuples
added 2 characters in body