Name of property that $0 \cdot x = 0$
129232
Is there a name for an element $z$ such that $\,zx = z = xz\,$ for all $x$?
145354
What is $\gcd(0,0)$?
52973
The identity $(u\times v)\cdot(x\times y)=\begin{vmatrix}u\cdot x&v\cdot x\\ u\cdot y&v\cdot y\\\end{vmatrix}$
30860
Prove that $f(x)=0$ in $[-1,1]$.
136628
Measure theory convention that $\infty \cdot 0 = 0$
122076
A one line proof that one is zero using Mathematica 10
66951
Proving the existence of a sequence of functions converging to 0 with an added property
88598
Property of $\{0^n, 1^n, \ldots\}$
65655
Give examples showing why $0\cdot \infty$, $\infty/\infty$, and $0/0$ are meaningless
117777
What are the zero divisors of $C[0,1]$?
1102
Way to determine if X and Y are both over 0
154596
When should \cdot be used to indicate multiplication?
143470
Square version of \cdot (small black square)?
33737
Does $1.0000000000\cdots 1$ with an infinite number of $0$ in it exist?
96355
What is the first order axiom characterizing a field having characteristic zero?
8160
What is $\gcd(0,a)$, where $a$ is a positive integer?
72660
How can I show that $f$ must be zero if $\int fg$ is always zero?