Papa Rudin exercise 2.8
3023
Construction of a Borel set with positive but not full measure in each interval
37012
The number of summands $\phi(n)$
12949
Inductive Proof of Euler's Formula $v-e+r=2$
130464
Exercise 2.11 Atiyah-Macdonald
138331
questions about Rudin's summation by parts
109200
Baby Rudin theorem 2.41
56775
Finding minimal form -- Velleman exercise 1.5.7a
2954
Extended Euclidean Algorithm in $GF(2^8)$?
123710
Find eight elements in $S_6$ that commute with $(12)(34)(56)$
130244
Exercise similar to prime avoidance theorem in R.Y. Sharp's textbook
40287
Prove: if $a,b\in G$ commute with probability $>5/8$, then $G$ is abelian
148774
show elements of order 15 in $S_8$ satisfy a relation
39201
Atiyah-Macdonald, Exercise 5.4
66703
Show that $8 \mid (a^2-b^2)$ for $a$ and $b$ both odd
23451
The new introduced EulerMatrix problem
105623
Prime factorization knowing n and Euler's function
70301
$\sin(n)$ subsequence limits set