Suppose that $g:\mathbb{R}^{2n}\rightarrow\mathbb{R}$ is a function such that:
$$f\left(x,x\right)\left[\nabla_{x}^{2}g\left(x,y\right)\right]_{x=y}+2\left[\nabla_{x}f\left(x,y\right)\right]_{x=y}\cdot\left[\nabla_{x}g\left(x,y\right)\right]_{x=y}=0$$
holds for all $f:\mathbb{R}^{2n}\rightarrow...
@GustavoBandeira No, I don't think you're a newbie (to math), or, rest assured, most everyone here is a "noob" at math. You're certainly not asking "newbie-ish" questions, rest assured!
If $$\frac{1}{2}\pi(\sqrt{n})+\frac{1}{2}\sum_{p\leq n}\pi(\frac{n}{p})=\sum_{pq\leq n}1$$, and $\pi(n)\sim \frac{n}{\ln(n)}$, how is $\sum_{pq\leq n}1\sim \frac{n\ln(\ln(n))}{\ln(n)}?$
@AndrewSalmon When a user is removed, users who earned reputation from their upvotes lose it. The question and answers remain, but you lose the points :-(
It happens sometimes when a user "rage quits" due to feeling insulted, or dynamics on the site. Usually people who stray from math.se keep their accounts. Occasionally, it's for privacy reasons.
Three years from 7 days and 17 hours prior to the month beginning with the letter A last year...
@Ethan My entire home resembles that! And I have very little surface area left that's free of books, journals, stacks of papers, folders, proofs, (and!) bills...kitchen table, no room to eat...kitchen counter? No room to use for cooking anything...Office? I can hardly walk in it! Sofa...more books. Coffee table...more journals...
In Brazil, they have implanted a new competitive exam for examination, the ENEM. If you're 18 yo, and if you get a good grade at it, you can require your high school completition certificate. :P
@GustavoBandeira Usually those of us with ocd find the obsessions/compulsions distressing. It's like being driven, not because you want to be, but have to be...
@Ethan Ethan, the SAT offers accommodations...you need to submit documentation, etc. from your doctor, but you can apply for extended time...I did that with the GRE and was allowed double-time for the test, for much the same reason as you.
@GustavoBandeira Not sure, I think I might just take linear algebra, I think its best I take somthing beneficial, that I might not enjoy studying on my own
@Ethan Yes, really. Go to the website, and find the bulletin...or registration form...there's usually links to "test-taking for students with documented "disabilities" ... I also got accommodations in college and grad school for extra time for tests.
how much notice do you need to get the acomodation?
@GustavoBandeira I watched khan academy for all my k-12 math education basicly, I learned some elementry number theory from a crapy book by silverman, looking at wikipedia articles, and just screwing around by myself
That's okay, you could still try, asap...usually the application and fees are submitted along with the request for accommodations. But I'd try calling the AP testing service, or sending a message/question on-line...
Suppose that $g:\mathbb{R}^{2n}\rightarrow\mathbb{R}$ is a function such that:
$$f\left(x,x\right)\left[\nabla_{x}^{2}g\left(x,y\right)\right]_{x=y}+2\left[\nabla_{x}f\left(x,y\right)\right]_{x=y}\cdot\left[\nabla_{x}g\left(x,y\right)\right]_{x=y}=0$$
holds for all $f:\mathbb{R}^{2n}\rightarrow...
