152 reputation
9
bio website N/A
location New Mexico
age 29
visits member for 3 years, 1 month
seen Aug 26 at 23:28

I'm a student of computer science, which is to say that I haven't yet demonstrated any kind of ability to do it. I love the mathematical, theoretical aspect of CS though, and am currently pursuing a minor in math to cover for the lack of it in my CS curriculum. Being a student also means that I have very little time, so please forgive me if it takes me a while to respond.


Dec
1
awarded  Popular Question
Nov
22
awarded  Autobiographer
Nov
22
revised A proof that this set is an ideal of a commutative ring
corrected reasoning again...
Nov
22
comment A proof that this set is an ideal of a commutative ring
But they aren't. Time for a (hopefully, final) edit.
Nov
22
awarded  Commentator
Nov
22
comment A proof that this set is an ideal of a commutative ring
Just a non-invertible automorphism! Wish the textbook included this stuff. Any other good ones you would recommend?
Nov
22
comment A proof that this set is an ideal of a commutative ring
I like your reply, but now I need to go learn what an endomorphism is. Thanks for the new math, really! According to your reply, it must be related as the left annihilator mentioned elsewhere. I will have to look into both of them.
Nov
22
comment A proof that this set is an ideal of a commutative ring
Argh, didn't use the x label again when proving that -b is in R. Hopefully the technical details are all ok now, though.
Nov
22
revised A proof that this set is an ideal of a commutative ring
completed proof that L is an additive subgroup of R
Nov
20
revised A proof that this set is an ideal of a commutative ring
fixed grammar error (I'll stop now, sorry)
Nov
20
revised A proof that this set is an ideal of a commutative ring
added 1104 characters in body
Nov
20
comment A proof that this set is an ideal of a commutative ring
Thanks to both @MarianoSuárez-Alvarez and Arturo Magidin for your suggestions to approach the problem more directly. I did so at first and must have messed something up badly, because I abandoned that route and tried this tack instead. Now that I have tried it again, it seems much simpler. I will add my new approach to my question now.
Nov
20
comment A proof that this set is an ideal of a commutative ring
Thanks to you as well @Henning, my general intent with adding that was to only write out the unfolding explicitly. I clearly should not have done so, given the logical interpretation you have brought up!
Nov
20
comment A proof that this set is an ideal of a commutative ring
Thank you for your help. I was a bit worried about my calling it a kernel as well, I should be able to remember that in the future. It seems that everything I wrote about this seemingly simple map was indeed quite muddled. I appreciate the continued patience in pointing that out.
Nov
20
accepted A proof that this set is an ideal of a commutative ring
Nov
20
asked A proof that this set is an ideal of a commutative ring
Oct
30
comment Simple properties of a direct product
Thanks to both you and @AMPerrine for your helpful replies. I'll clean it up a bit soon with the feedback you've provided.
Oct
30
accepted Simple properties of a direct product
Oct
30
asked Simple properties of a direct product
Oct
25
answered If $g \circ f$ is the identity function, then which of $f$ and $g$ is onto and which is one-to-one?