1,955 reputation
835
bio website
location Santiago, Chile
age 23
visits member for 2 years, 2 months
seen yesterday

I'm an undegraduate math student in Pontificia Universidad Católica de Chile.


Jul
27
comment Can I write $|x|$ as $|-x|$?
Good, you got it.
Jul
27
comment Can I write $|x|$ as $|-x|$?
Exactly, and $-y=x$ then $|-x|=x$ in that case.
Jul
27
comment Can I write $|x|$ as $|-x|$?
It must be "if $y\geq 0$"
Jul
27
comment Can I write $|x|$ as $|-x|$?
Yes. You wrote it. And it is wrong.
Jul
27
answered Can I write $|x|$ as $|-x|$?
Jul
24
comment For extension fields, does $[F(a,b):F(a)]=[F(b):F]$?
A true statment is $[F(a,b):F(a)]\leq[F(b):F]$.
Jul
2
awarded  Curious
Jul
2
awarded  Inquisitive
Jun
1
comment Multiplicative Property of the degree of field extension
Why exists $f$ monic irreducible such that $K\cong F[x]/(f)$? That is true if $K=F(a)$ where $f$ is the minimal polynomial for $a$ over $K$. Finite extensions must be algebraic but not always simple if the field extension is not separable.
May
12
awarded  Yearling
May
2
revised Proving $\phi$ is well-defined
edited body
May
2
answered Proving $\phi$ is well-defined
May
1
comment $g\in G$ maximal order in $G$ abelian then $G=\left<g\right>\oplus H$
@mezhang I didn't know how to do the $p$-group case, so this is not a duplicate.
Apr
27
comment Non simplicity of a group of order $p^{100}q$ given some conditions.
Nice examples, thanks.
Apr
27
comment Non simplicity of a group of order $p^{100}q$ given some conditions.
Ty(13 more to go)
Apr
26
comment Non simplicity of a group of order $p^{100}q$ given some conditions.
Ty, did you mean $<x>$ is the non trivial normal subgroup of $G$?
Apr
26
accepted Non simplicity of a group of order $p^{100}q$ given some conditions.
Apr
21
revised Non simplicity of a group of order $p^{100}q$ given some conditions.
added 317 characters in body
Apr
19
revised Non simplicity of a group of order $p^{100}q$ given some conditions.
added 70 characters in body
Apr
19
comment Non simplicity of a group of order $p^{100}q$ given some conditions.
To use 2.- we must prove that there are 2 p sylow subgroups (If exists only one we are done) and for each pair of p Sylow subgroups i want to show that intersection is trivial. I dont believe that is true without abelianity.