Bézout's identity question
135571
Bézout Identity with coefficient divisibility constraints
149686
Combinatorics and trigonometry identity
126859
$\Bbb Z^\ast$ What is this notation?
83981
How to prove those "curious identities"?
15626
Relations of a~b iff b = ak^2
147564
Why does $(A/I)\otimes_R (B/J)\cong(A\otimes_R B)/(I\otimes_R 1+1\otimes_R J)$?
125174
Combinatorial intuition of identity
111038
If there is a unique left identity, then it is also a right identity
81868
How to prove $\operatorname{Tr}(AB) = \operatorname{Tr}(BA)$?
58642
If $g \circ f$ is the identity function, then which of $f$ and $g$ is onto and which is one-to-one?
131792
Questions about right ideals
94914
Concise proof that every common divisor divides GCD without Bezout's identity?
129732
What is $\operatorname{Aut}(\mathbb{Z}_2\oplus \mathbb{Z}_2)$?
127121
The identity cannot be a commutator in a Banach algebra?
125734
Has anyone talked themselves into understanding Euler's identity a bit?
56612
Proof of $\gcd(a,b)=ax+by\ $ [Bezout's identity]
146099
Why is this true: The only orthogonal projection that is also unitary from $\Bbb C^n$ to $\Bbb C^n$ is the identity