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2d
comment order of non abelian group can't be what?
First of all mind your language.... I really do not see any thing other than "But from option 55 and 125 which one is not possible?" You did not said anything about what do you think about those groups....
2d
comment order of non abelian group can't be what?
you tried something??
2d
comment A subgroup of index $5$ contains all elements of the center of a group of order $3$
Did you tried something???
Jan
10
comment Give a direct proof of the fact that $a^2-5a+6$ is even for any $a \in \mathbb Z$
@GEdgar : I am sure that can be done be completed OP...
Jan
10
comment Connectedness of the level set of continuous map
Please write the question properly... It is difficult to guess what you are asking..
Jan
10
answered Give a direct proof of the fact that $a^2-5a+6$ is even for any $a \in \mathbb Z$
Jan
10
comment Give a direct proof of the fact that $a^2-5a+6$ is even for any $a \in \mathbb Z$
i suggest you to check the question again..
Jan
9
comment Non-commutative ring with 64 elements?
proofwiki.org/wiki/…
Jan
9
comment An R-linear map R/I to R
you are welcome... you still have to prove the isomorphism and i believe you can do that... good luck :)
Jan
9
comment An R-linear map R/I to R
that is it.... ..
Jan
9
comment An R-linear map R/I to R
and what is the answer???
Jan
9
comment An R-linear map R/I to R
@user44636 : Yes.... so??
Jan
9
comment An R-linear map R/I to R
I am sorry, i was busy with some other question... i have posted some hints as an answer.. See if that helps..
Jan
9
answered An R-linear map R/I to R
Jan
9
comment An R-linear map R/I to R
Fine... i have said something in the chat... Let me know if you can see that
Jan
9
comment An R-linear map R/I to R
That does not help... May be you should tell for what $r\in R$ can you have $\eta(1+I)=r$???
Jan
9
comment An R-linear map R/I to R
Suppose $\eta : R/I \rightarrow R$ is a homomorphsim then what can you say about $\eta(1+I)$??
Jan
9
comment An R-linear map R/I to R
you tried something?
Jan
9
comment Proved conjectures (now theorems) in algebra/algebraic number theory/algebraic geometry
@Krish : Please make it as an answer...
Jan
9
revised Proved conjectures (now theorems) in algebra/algebraic number theory/algebraic geometry
added 229 characters in body