Complete Residue Systems Modulo m
105225
Number Theory: Complete set of residues modulo $n$
118955
Specific steps in applying the Chinese Remainder Theorem to solve modular problem splitting modulus
158062
Sum of free submodules of a module over a PID
5577
If $m$ divides $n$, find a free resolution of $\mathbb{Z}/m$ as a $\mathbb{Z}/n$-module.
29231
Proof of : $x^{n}\equiv x^{\varphi(m)+[n \bmod \varphi(m)]} \mod m$
30045
Solving linear congruences by hand: modular fractions and inverses
96816
The residue at $\infty$
4129
Solvability of $a \equiv x^2 \mod b$
155012
Solving quadratic equations in modular arithmetic
131905
Proof for exponentiation in modular arithmetic
134654
How to apply CRT to a congruence system with moduli not coprime?
26478
Show that the congruence $x^{p-1} \equiv 1 \pmod {p^2}$ has precisely $p-1$ solutions modulo $p^2$
360
Modular exponentiation by hand ($a^b\bmod c$)
129574
Sum over all residues is zero
151764
modular arithmetic, solving $ax + b \equiv c \pmod d$?
117484
Why is $c+q$ still a primitive root modulo $q$?
149481
Number theory counting sums of squares modulus