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visits member for 2 years, 4 months
seen Jul 20 at 2:51

Jul
2
awarded  Curious
Jun
23
accepted Is there standard notation for an arbitrary polynomial of degree $k$?
Jun
22
comment Is there standard notation for an arbitrary polynomial of degree $k$?
@GitGud, I like your suggestion.
Jun
22
comment Is there standard notation for an arbitrary polynomial of degree $k$?
I should've just gone with this, I guess, but then I feel compelled to add "for some $a_k \in \mathbb{R}$" or something of that nature :) Which is fine, of course, but I was hoping to get something that doesn't require any "where"'s.
Jun
22
asked Is there standard notation for an arbitrary polynomial of degree $k$?
Jun
16
comment Show $(x+y)^a > x^a + y^a$ for $x,y>0$ and $a>1$
Looks good, though I'd say you should avoid using the word "clear" ;)
Jun
16
comment Show $(x+y)^a > x^a + y^a$ for $x,y>0$ and $a>1$
Nice. I was trying to play around with derivatives of a function increasing in terms of $a$ in a similar way, but I guess I didn't approach it correctly.
Jun
16
asked Show $(x+y)^a > x^a + y^a$ for $x,y>0$ and $a>1$
Apr
14
revised Is it easier to publish in certain areas of mathematics?
added 72 characters in body
Apr
14
awarded  Yearling
Apr
14
asked Is it easier to publish in certain areas of mathematics?
Mar
23
revised Derivative of infinite sum
Fixed LaTeX generating errors.
Mar
23
suggested suggested edit on Derivative of infinite sum
Mar
13
comment If $f$ and $g$ are integrable, then $h(x,y)=f(x)g(y)$ is integrable with respect to product measure.
@user54358 To show the hint, you actually use Tonelli's theorem (if I got a dollar for every time I point out that difference... :)).
Feb
27
comment Is there an expression for getting number of times to divide an even number by 2 to get an odd number?
Not even omega knows how to define it, judging from his original post, so why would you redefine it for him?
Feb
27
comment Is there an expression for getting number of times to divide an even number by 2 to get an odd number?
No, it would not. Based off of his examples, your function does not work.
Feb
27
comment Is there an expression for getting number of times to divide an even number by 2 to get an odd number?
So what is $j$ supposed to do if $f(i,j) = f(j)$? And you think that if you divide $72$ by $2$ $3$ times, then you get the largest odd number $\leq x$? Do you want to recheck that? :)
Feb
26
comment is this intengral bounded?
Try to complete the square in $y$, see whether a change of variable will help then.
Feb
23
comment Unitary group and unit circle
Thanks, I thought you were somehow using the product rule, and wasn't sure how exactly. Oh, and you've got a \dot LaTeX generating error there :)
Feb
22
comment Unitary group and unit circle
Thanks for the edit, although I'm still not sure how you got $f(AB) = f(A) f(B) \Rightarrow df_A = det(A) df_I$, and how that's straightforward to see. Care to elaborate on this a bit?