How do we know that the number $1$ is not equal to the number $-1$?
89637
Proof that in a field $x=0$ is equivalent to $x=-x$
56724
How do I check that a number is float or integer?
108633
Why $f^{-1}(f(A)) \not= A$
48884
Determine whether $712! + 1$ is a prime number or not
14633
What's the thing with $\sqrt{-1} = i$
148647
If $\dfrac{4x^2-1}{4x^2-y^2}$ is an integer, then it is $1$
121052
Where is the mistake? $-1=(-1)^{2/2}=\left(\left (-1\right)\displaystyle ^2\right)^{1/2}=1^{1/2}=\sqrt 1=1$
54030
Square and square root and negative numbers
76434
What is the measure of the set of numbers in $[0,1]$ whose decimal expansions do not contain $5$?
41779
Is $x/x$ equal to $1$
149954
Subtraction of a negative number
126031
why is not (123 == 0123) in java?
39420
binary numbers?
69833
Number of elements not equal to their inverses is even number
6650
Why $\sqrt{-1 \times -1} \neq \sqrt{-1}^2$?
115506
What's wrong with this demonstration? (1 = -1)
79895
The modulo operation on negative numbers in Python