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apnorton
  • Member for 10 years, 5 months
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44 votes
3 answers
3k views

Notation: Why write the differential first?

29 votes
2 answers
10k views

Proving the Riemann Hypothesis and Impact on Cryptography

22 votes
2 answers
1k views

Question from Putnam '89: Primes of the form $101\ldots01$

18 votes
5 answers
2k views

Notation Question: What does $\vdash$ mean in logic?

16 votes
1 answer
586 views

Functions for which $\int f(g(x))\, \mathrm dx = f\left(\int g(x) \, dx\right)$

9 votes
3 answers
644 views

Relationship between $\int_a^b f(x)\,dx$ and $\int_a^bxf(x)\,dx$

6 votes
2 answers
577 views

Generating Functions: Solving a Second-Order Recurrence

6 votes
2 answers
727 views

Vector Calculus Proof: $\oint_K \nabla f\cdot \vec n\,ds$ has two possible values

5 votes
1 answer
416 views

Question from Putnam '08: Given $F_n(x)$, find $\lim_{n\to\infty}\frac{n!F_n(1)}{\ln(n)}$

5 votes
1 answer
468 views

Iterations of modulus operation

4 votes
2 answers
955 views

Summation and Product Bounds

4 votes
2 answers
836 views

On the equality of the sum of a set and the product of a set.

4 votes
2 answers
2k views

Bases required for prime-testing with Miller-Rabin up to $2^{63}-1$

2 votes
1 answer
71 views

Output from increasing numbers of workers

2 votes
1 answer
99 views

DE involving Hyperbolic Trig function (Quick check)

1 vote
1 answer
161 views

How does one find annihilators for recurrence relations?

1 vote
1 answer
426 views

Proof Checking and input: Generators of $\mathbb{Z}_{pq}$

1 vote
2 answers
4k views

Proof help involving perfect squares

1 vote
2 answers
3k views

Proof Help: In a group $G$, there exists a $g$ such that $g^2 = e$ [duplicate]