Enjoys Math

Sedona, AZ

Age: 28

11h
comment $\mathbb{C} [G] \longrightarrow \prod_{\rho} \text{End}(V_{\rho})$ an intertwining isomorphism
" is a not only a ring isomorphism, but also an intertwining isomorphism of [...]" - do you mean it is or isn't also an intertwining isomorphism of ...?
11h
asked Do you know of a brute-force algorithm for optimizing polynomial expressions?
11h
comment Verifying divergence theorem for a unit sphere
$S$ is probably the ball, and of course $x \to -x, \dots $ etc. is a homeomorphism of it.
15h
accepted An induction proof on a version of "prime avoidance" from Atiyah-McDonald.
15h
comment An induction proof on a version of "prime avoidance" from Atiyah-McDonald.
So for general case $n$, if $\mathfrak{a} \not\subset \mathfrak{p}_i, i= 1\dots n$, then for any $n-1$ of the ideals there's $x_i$ not in any of the ideals, by induction hypothesis. Makes sense now. Thanks!
16h
asked An induction proof on a version of "prime avoidance" from Atiyah-McDonald.
21h
comment $V(\mathfrak{a} \cap \mathfrak{b}) = V(\mathfrak{a}) \cup V(\mathfrak{b})$ (Spectrum of a commutative ring)
@Guest Thanks. I do have a copy of that book and will go over the theorem.
21h
revised $V(\mathfrak{a} \cap \mathfrak{b}) = V(\mathfrak{a}) \cup V(\mathfrak{b})$ (Spectrum of a commutative ring)
added 362 characters in body; edited title
21h
comment $V(\mathfrak{a} \cap \mathfrak{b}) = V(\mathfrak{a}) \cup V(\mathfrak{b})$ (Spectrum of a commutative ring)
@Guest oops ur right
21h
comment $V(\mathfrak{a} \cap \mathfrak{b}) = V(\mathfrak{a}) \cup V(\mathfrak{b})$ (Spectrum of a commutative ring)
how do you make those special letter symbols that usually stand for ideals?
21h
asked $V(\mathfrak{a} \cap \mathfrak{b}) = V(\mathfrak{a}) \cup V(\mathfrak{b})$ (Spectrum of a commutative ring)
1d
accepted If two groups act on a set in the same way then are the two groups related?
1d
awarded Unsung Hero
1d
revised If two groups act on a set in the same way then are the two groups related?
added 280 characters in body
1d
revised If two groups act on a set in the same way then are the two groups related?
added 280 characters in body
1d
asked If two groups act on a set in the same way then are the two groups related?
1d
comment How to prove this polynomial expression.
@ThomasAndrews thank you! That means it's not the right polynomial I'm after.
1d
comment Big O and function composition
I thought big-O was for some $x_0 \in \Bbb{R}$, $\forall x \geq x_0, \dots$
1d
awarded Scholar
1d
awarded Supporter
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