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Carl Schildkraut's user avatar
Carl Schildkraut's user avatar
Carl Schildkraut's user avatar
Carl Schildkraut
  • Member for 8 years, 11 months
  • Last seen this week
17 votes
1 answer
567 views

Killing Flies with a Checkerboard Flyswatter

17 votes
0 answers
439 views

Minimum area contained between measurable set and translate by $\lambda$: A strengthening of 2018 USA TSTST #9

14 votes
0 answers
494 views

Groups with no small nontrivial representation

11 votes
1 answer
2k views

Proof of Cayley-Hamilton Theorem in infinite fields only?

6 votes
2 answers
322 views

Is $f(x)$ necessarily a polynomial if $f(f(x))$ is?

6 votes
1 answer
184 views

Synthetic proof that, given points $A,B,C,D$ in space, $\angle BAC \leq \angle BAD+\angle DAC$?

5 votes
0 answers
143 views

Looking for a 1923 paper of Issai Schur on permutation polynomials

5 votes
1 answer
460 views

What modulus should be chosen when proving impossibility of $|2^m-3^n|=N$?

4 votes
1 answer
62 views

How to evaluate an infinite sum involving remainders

4 votes
0 answers
199 views

Closed Form for sum $\sum^{\infty}_{n=1} \frac{1}{3^n+n}$

4 votes
0 answers
87 views

Numerators of close rational approximations to $\pi$

3 votes
1 answer
1k views

A limit involving the Regularized Incomplete Beta Function

3 votes
1 answer
228 views

Partition of $\mathbb{C}$ into Borel sets for which a polynomial is a bijection with $\mathbb{C}$

3 votes
1 answer
217 views

Collatz Variation: The Prime Frog

3 votes
2 answers
114 views

Integral of $\prod_{i=1}^n (\mathbf{x}\cdot \mathbf{u_i})\ \mathrm{d}\mathbf{x}$ over the ($n-1$)-sphere.

3 votes
2 answers
118 views

Different answers on $\frac{1}{2\pi}\int_0^{2\pi} \frac{1}{e^{ix}+c}\ dx$ where $c\in\mathbb{C}$ is fixed

3 votes
0 answers
324 views

Intuitive explanation for why the 15 and 290 Theorems should be true

3 votes
0 answers
53 views

Does there exist a nice closed form for multidimensional linear recurrence relations like those of single-dimensional ones?

2 votes
1 answer
190 views

Functions over $\mathbb C$ that are both additive and multiplicative

2 votes
2 answers
144 views

Is there a good upper bound for the number of ways $n$ can be expressed as the product of distinct positive integers?

1 vote
0 answers
123 views

Is $f(x)=\sum_{n=1}^{\infty} \frac{1}{n}\sin\left(\frac{x}{n}\right)$ bounded? [duplicate]

1 vote
0 answers
191 views

Integral involving the gamma function

0 votes
1 answer
54 views

Finding subsequences $\mathbf{c}$ of $\mathbf{b}$ such that $\mathbf{a}\cdot\mathbf{c} \equiv 0\bmod t$ for fixed sequences $\mathbb{a},\mathbb{b}$

0 votes
1 answer
674 views

How does colorability work in infinite (countable and uncountable) graphs?

0 votes
0 answers
87 views

Maintaining constant area when mapping a square to the unit circle

0 votes
0 answers
151 views

Proof claimed that almost all zeroes of the Riemann zeta function lie on the critical line