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A mathematician, a programmer, etc. etc.


Jul
25
suggested approved edit on When are $3$ vectors associative in triple cross products?
Jul
20
comment is there a notion of graded Zariski tangent space?
There is a Zariski tangent space defined in this eprint, at the end of section 2.2 (on the top of page 4) is extended to a Zariski tangent superspace for a particular example therein.
Jul
11
comment Approximate solution for an ODE
Perhaps you should use some words...
Jun
12
comment Approximate solution for an ODE
Why not just make the approximation that $\pm1+\exp(l^{2})\approx\exp(l^{2})$ and $\pm l^{2}+\exp(l^{2})\approx\exp(l^{2})$?
May
18
awarded  Yearling
May
9
awarded  Caucus
Dec
25
revised A relationship between matrices, bernoulli polynomials, and binomial coefficients
added 1217 characters in body
Dec
25
comment A relationship between matrices, bernoulli polynomials, and binomial coefficients
@AndrewGibson: Many thanks for double checking my work! I really appreciate it :)
Dec
25
comment A relationship between matrices, bernoulli polynomials, and binomial coefficients
Oh, I hate to burst the magic: your matrix factorization is incorrect. If you carry out the matrix multiplication, you don't recover the correct matrix :(
Dec
25
answered A relationship between matrices, bernoulli polynomials, and binomial coefficients
Dec
25
comment A relationship between matrices, bernoulli polynomials, and binomial coefficients
This phenomena is unique to 4 dimensions, it fails in 5 dimensions (although, I openly confess, I haven't done intense linear algebra calculations in a while---so I may have committed an error!).
Dec
25
comment A relationship between matrices, bernoulli polynomials, and binomial coefficients
+1 for a great question!
Dec
25
suggested rejected edit on A relationship between matrices, bernoulli polynomials, and binomial coefficients
Dec
25
comment when does a separate-variable series solution exist for a PDE
A good reference on this is Methods of Theoretical Physics by Philip McCord Morse and Herman Feshbach.
Dec
24
suggested rejected edit on Interpreting a limit as a derivative
Dec
23
comment Division into $x(x-1)$
@Tomasz but $g=4$ doesn't cleanly divide $3(3-1)=6$ for $x=3$...
Dec
23
revised Division into $x(x-1)$
TeX-ed it up
Dec
23
comment Division into $x(x-1)$
Ah yes, well played, @Marvis!
Dec
23
comment Division into $x(x-1)$
<del>Also $g$ must be even...otherwise no such integer $x$ exists. So therefore $g\gt 2$, thanks to @Marvis' observation.</del> This is wrong, thanks to a simple counter-example $g=15$, $x=6$ (thanks @Marvis!).
Dec
23
suggested approved edit on Division into $x(x-1)$