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Nov
15
asked $I_m - AB$ is invertible if and only if $I_n - BA$ is invertible.
Nov
14
comment Is this $SL_3(\mathbb{F_2})$ look like?
@sos440 +1 for the complete list
Nov
5
awarded  Revival
Nov
3
comment How many decimal places are needed for incremental average calculation?
@JernejJerin If you are satisfied with the answers, you might consider accepting them, else you might want to indicate what more information you want.
Oct
29
comment Good problem book on Abstract Algebra
I unaccepted your answer and instead accepted Dedalus's answer since on retrospective, I have found some of the book Exercise in Algebra and other books a more concentrated source of problems. I hope you don't mind.
Oct
29
accepted Good problem book on Abstract Algebra
Oct
26
accepted Determinant of a Modified Jacobian of a Function
Oct
26
comment Determinant of a Modified Jacobian of a Function
That's all there to it?! I came up with a similar but infinitely cruder solution, however, I was not sure of this. Also, I was thinking there might be some rank-related solution also. Anyway, thanks. :-)
Oct
26
asked Determinant of a Modified Jacobian of a Function
Oct
22
revised Give a basis for $\mathrm{Ker}(T)$ and $\mathrm{Im}(T)$ of the linear transformations
Corrected Grammar.
Oct
22
suggested approved edit on Give a basis for $\mathrm{Ker}(T)$ and $\mathrm{Im}(T)$ of the linear transformations
Oct
19
suggested rejected edit on how to prove if $a|b$ and $b\neq 0$, then $|a|\leq|b|$
Oct
19
revised Number of songs sung.
Correct Grammar and Removed all Caps.
Oct
19
suggested approved edit on Number of songs sung.
Oct
18
comment How to solve this equation:$\sqrt{x-\sqrt{x-\sqrt{x-\sqrt{x-5}}}}=5$
@vesszabo No, he uses it in this direction, but goes upto infinity, however, I am not sure of the formal justification of the step.
Oct
18
comment How to solve this equation:$\sqrt{x-\sqrt{x-\sqrt{x-\sqrt{x-5}}}}=5$
The logic is similar to $\sqrt{x-5} =5 \implies \sqrt{x-\sqrt{x-5}} = 5$
Oct
5
awarded  Organizer
Oct
5
revised Prove that exists a unique subgroup $H$ of $G$ has order of $n$.
Corrected a minor grammatical error in the title and the text and tagged the question with abstract algebra tag to better mirror the background.
Oct
5
suggested approved edit on Prove that exists a unique subgroup $H$ of $G$ has order of $n$.
Sep
28
comment Cycling Digits puzzle
Added some more explanation. I hope it is more clear now.