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davidlowryduda
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  • Member for 11 years, 2 months
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36 votes
0 answers
865 views

Using the Brun Sieve to show very weak approximation to twin prime conjecture

17 votes
3 answers
3k views

closed form of $\sum \frac{1}{z^3 - n^3}$

15 votes
1 answer
2k views

$\frac{16}{27} \left( \frac a{b+c} + \frac b{a+c} +\frac c{a+b} \right) ^3 + \left( \frac{abc}{(a+b)(b+c)(a+c)}\right)^{\frac{1}{3}} \geq \frac52$

15 votes
1 answer
782 views

Is there a 'far' irrational number?

14 votes
2 answers
3k views

Classifying Unital Commutative Rings of Order $p^2$

11 votes
1 answer
7k views

Single Variable Calculus Reference Recommendations

8 votes
1 answer
279 views

Integrals 3.384 from Gradshteyn and Ryzhik

8 votes
1 answer
295 views

Invariants of binary forms under a $\begin{pmatrix} 1& 1 \\ 0& 1 \end{pmatrix}$ action

7 votes
3 answers
317 views

Elementary, direct proof of when $5$ is a quadratic residue mod $p$

6 votes
2 answers
785 views

Prime power Gauss sums are zero

6 votes
1 answer
192 views

Dixon's Theorem to probabilistically bound largest factor of N

6 votes
2 answers
797 views

Equivalent definitions of the trace of a Hilbert-Schmidt operator

6 votes
1 answer
225 views

In the mean value theorem, we are guaranteed $c$ such that $f'(c) = (f(b)-f(a))/(b-a)$. Does $c$ have a name?

6 votes
1 answer
3k views

Do there exist bump functions with uniformly bounded derivatives? [duplicate]

5 votes
1 answer
1k views

Bounding error of Padé approximation

5 votes
2 answers
164 views

Choosing $a$ s.t. $\frac{a^k - 1}{a-1}$ is not a prime power

4 votes
2 answers
190 views

Looking for references on 'non-discrete lattices'

4 votes
1 answer
107 views

A harder tournament to schedule

4 votes
1 answer
209 views

Proving that $(2 \pi i)^{-1} \int e(\pi v^2/y^2) x^v y^{-1} dv = e(-\pi (\log x)^2 y^2 /4)$

3 votes
4 answers
166 views

Estimating an exponential sum $\sum_{n = 1}^x e^n/n$

3 votes
0 answers
82 views

Modular function for upper triangular matrices from Iwaniec

3 votes
1 answer
144 views

Notation confusion in "On Some Results of Atkin and Lehner" article

3 votes
1 answer
406 views

Finding an irrational not covered in standard proof that $\mu(\mathbb{Q} \cap [0,1]) = 0$ [duplicate]

3 votes
1 answer
232 views

A pair of integrals of rational powers of sines

2 votes
1 answer
495 views

Basic Monte Carlo simulation of indistinguishable balls and distinguishable bins

2 votes
2 answers
279 views

Estimating the sum of reciprocals of products of two primes

2 votes
1 answer
962 views

Expected distance of a random walk of distance $k$ on the $k$th step

1 vote
1 answer
113 views

Showing that $\int_0^1 \vert 1 - e^{2\pi i z} \vert^{-1} dx \ll \log(2 + y^{-1})$

1 vote
0 answers
61 views

Proving a bound for $\Gamma(s+u)/\Gamma(s)$

1 vote
2 answers
94 views

Showing that $\{ n\mid \nu(n) \equiv 0 \pmod e\}$ is independent of primitive root