Is $x=0$ if $|x|0$ ??
89034
For any $\epsilon$, if $\epsilon>0$ and $|x|<\epsilon$, then $x=0$
121353
If $x$ and $y$ are not both $0$ then $ x^2 +xy +y^2> 0$
71953
If $\int_0^1 f x^n dx=0, \forall n \in \mathbb{N} $, then $f\equiv 0.$
119984
Limit of $0/x$ as x goes to 0
54029
What is x after "x = x++"?
89637
Proof that in a field $x=0$ is equivalent to $x=-x$
70585
Why does Assuming[x > 0, TrueQ[x > 0]] return False?
66451
In a ring, how do we prove that a * 0 = 0?
16375
Is the function differentiable at $0$?
37376
what is the argument of 0?
61472
If $0<x<y$, then prove that $\sqrt{x} <\sqrt{y}$ and $x <\sqrt{xy} <y$
100765
If $f'(x) = 0$ for all $x \in \mathbb{Q}$, is $f$ constant?
138544
For which values of $x$, will $f (x) . f '(x) < 0$?
102968
How to find out if a binary number is zero
138481
$f(x)=x/1$ is not injective?
1444
Prove/Show that Limit is equal to 0.
156235
Are $x \cdot 0 = 0$, $x \cdot 1 = x$, and $-(-x) = x$ axioms?