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Sputnik's user avatar
Sputnik
  • Member for 13 years
  • Last seen more than a month ago
  • Reading, United Kingdom
61 votes
Accepted

Strategies for Effective Self-Study

10 votes
Accepted

Why is "working in $\mathbb {Z}_m$" essentially the same as "working with congruences modulo m"?

9 votes

"Casual" mathematical facts with practical consequences

7 votes
Accepted

How many usernames are there and how do you calculate it?

7 votes

Which one result in mathematics has surprised you the most?

7 votes
Accepted

$\lim_{n\to \infty }\cos (\pi\sqrt{n^{2}-n})$ - second battle

3 votes

Can one show that $\sum_{n=1}^N\frac{1}{n} -\log N - \gamma \leqslant \frac{1}{2N}$ without using the Euler-Maclaurin formula?

2 votes

Why does the indefinite integral $\int \sin(x) \sec^2(x) dx$ give different answers for different substitutions?

1 vote

Stumped by equation that contains both exponential and logarithm

0 votes

how to find non trivial subgroups of a group

0 votes

Distance Between Planes Splitting a Sphere