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Aug
30
comment Solve $x^{x^x}=-1$
@RenatoFaraone is the closed form an open question?
Aug
30
comment Does $G\cong G/H$ imply that $H$ is trivial?
This is beautiful
Aug
30
asked Proofs of the multiplication or chain rule for derivatives that invoke symmetry
Aug
16
awarded  Popular Question
May
24
awarded  Popular Question
Mar
10
awarded  Tumbleweed
Mar
3
asked Less-ugly proof of infinitude of primes of form 6N+1
Mar
2
awarded  Popular Question
Sep
5
awarded  Yearling
Jul
2
awarded  Curious
Apr
12
comment What does an outer automorphism look like?
@StevenStadnicki this should be the example that introductory textbooks provide. It is a lot more accessible than analyzing $S_6$
Apr
11
awarded  Nice Question
Mar
31
comment Isomorphism between $E_8$ lattice and lattice defined by Extended Hamming Code
Just wanted to thank you again for a terrific answer. It's very helpful to beginners in algebra like myself
Mar
22
awarded  Nice Question
Feb
6
answered Rolle theorem on infinite interval
Feb
6
revised Estimating the natural logarithm from both sides: $1/(a+1)<\ln((1+a)/a) <1/a$
added 136 characters in body
Feb
6
answered Estimating the natural logarithm from both sides: $1/(a+1)<\ln((1+a)/a) <1/a$
Nov
24
awarded  Benefactor
Nov
22
accepted Isomorphism between $E_8$ lattice and lattice defined by Extended Hamming Code
Nov
17
awarded  Promoter