Mathematics
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user0
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A hobby of mine is solving problems in mathematics textbooks.

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View all questions and answers
All Questions Answers
Score Newest
answer
10
Elliptic curve formulas for point addition
Apr 10, 2017
answer
8
About the Fermat quotients with base $2$
Nov 16, 2016
question
7
Probability that the sum of $k$ distinct integers selected from $1, 2, \dots, n$ is divisible by $n$
Sep 5, 2017
question
7
Existence of $n_1 \sigma(n_1) = n_2 \sigma(n_2) = \cdots = n_r \sigma(n_r)$ for any $r$
Sep 7, 2017
answer
7
How many numbers in a given range are coprime to $N$?
Jun 17, 2017
answer
6
Prove that any two consecutive terms of the Fibonacci sequence are relatively prime
Jan 26, 2017
answer
6
Determining the existence of solutions to the linear Diophantine equation $ax + by = c$
Feb 16, 2017
answer
4
What does the plus/minus subscript notation mean under the expectation?
Nov 15, 2021
answer
4
What causes the last item of the simple periodic continued fraction of the square root of positive prime to be double the first item?
May 27, 2017
question
3
If $\cos p\alpha$ and $\cos q\alpha$ are rational with $p,q$ relatively prime, then $\cos \alpha$ is rational, or $\alpha$ is a multiple of $\pi / 6$.
Sep 27, 2017

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