42,175 reputation
364149
bio website davidlowryduda.com
location Providence, RI
age 26
visits member for 3 years, 9 months
seen 13 mins ago

I'm working on my Math PhD at Brown University. I've finished my second year, and now I pursue my interests in analytic number theory. In particular, I study automorphic forms under Dr. Jeff Hoffstein.

I happen to loosely update a math blog at davidlowryduda.com. I put a lot of MSE things on there too, though a lot of the material caters to whatever class I'm teaching at the time (this fall, calc I).


1d
revised Is the way I simplify my notation?
edited tags
1d
answered Is the way I simplify my notation?
Jan
29
comment Cuscs of a subgroup of $\Gamma$
Is your question to show that there are only two cusps (which is how I read it, but which is false) or to show that the 0 cusp and the infinite cusp are disjoint (which is true)?
Jan
29
answered Basic sanity check: dimension of Lie groups / tangent spaces
Jan
28
answered Prove that $\sum_{p \in \mathcal P} \frac1{p\ln \ln p}$ is divergent
Jan
28
comment Understanding why the public exponent $e$ is chosen the way it is in RSA
You want to look up Eulers Theorem. We choose that phi in order that the inverse be unique. If they share a factor, the. Multiple plaintexts can be encrypted to give the same crypt text, which would be bad.
Jan
28
revised Question 2.1 of Bartle's Elements of Integration
deleted 181 characters in body
Jan
25
comment Convergence of $\sum_{n=1}^{\infty} \log~ ( n ~\sin \frac {1 }{ n })$
As a side note, if you are sufficiently versed in these expansions, then you can do this heuristic quickly and in your head.
Jan
25
answered Convergence of $\sum_{n=1}^{\infty} \log~ ( n ~\sin \frac {1 }{ n })$
Jan
25
answered Weighted Average Proof
Jan
24
revised you know root square of -1, what is the larger of the square?
rolled back to a previous revision
Jan
24
reviewed Reviewed How to integrate $((x^2-1)(x+1))^{-2/3}$ using the substitution $u=(x-1)/(x+1)$?
Jan
24
reviewed Reviewed Can somebody explain with one example the concepts: Lemma-Hypothesis-Theorem-Assumption-Proof-Axiom-Thesis-Determination-Definition-Proof
Jan
24
comment $C^1$ versus smooth submanifolds
It's your own question, and there are no answers. If you want to delete it, you can do so on your own (that is, you don't need mods to do it for you)
Jan
24
reviewed Leave Open Solve trigonometric equation $\sin(2t) = −\frac{\sqrt{2}}{2}$ on interval $[0, 2 \pi]$
Jan
24
reviewed Leave Open Proving that an infinite sum of irrationals is irrational
Jan
24
reviewed Leave Open Prove or disprove that this function is continuous
Jan
24
reviewed Close How do you remember “Mathematics”
Jan
24
answered Differentiating position with respect to 'modified time'
Jan
24
comment Complete Proof of Lindelof Theorem
I encourage you to delete this question, and then sit down and type what you need yourself here. Also include your work and where exactly you are having doubts.