Why isn't $i * i = 1$?
3712
Why $\sqrt{-1 \cdot {-1}} \neq \sqrt{-1}^2$?
87322
How to calculate $i^i$
115506
What's wrong with this demonstration? (1 = -1)
39908
Finding the error in this proof that 1=2
78556
Why isn't [1,2,3] equal to itself in Javascript?
56745
Why does this not work with an imaginary exponent?
81875
why is $\sqrt{-1} = i$ and not $\pm i$?
97890
$\{1,1\}=\{1\}$, origin of this convention
52946
If $X$ is an orthogonal matrix, why does $X^TX = I$?
34913
Why does basic algebra provide one value for $x$ when there should be two?
94627
What's wrong with this derivation that $i\hbar = 0$?
55094
How to show $i^{-1} = -i$?
66451
In a ring, how do we prove that a * 0 = 0?
62850
Linear Algebra: If $A^3 = I$, does $A$ have to be $I$?
96554
Why is $x^0 = 1$ except when $x = 0$?
5526
Prove that $ℤ[i]^*= \{1,-1,i,-i\}$
95449
What is the square root of "$i$"?