What went wrong in proving $i=1$
3712
Why $\sqrt{-1 \cdot {-1}} \neq \sqrt{-1}^2$?
110826
prove that : $ i = \sqrt {-1}\ $
81275
Eigenvalue Problem -- prove eigenvalue for $A^2 + I$
62613
Need to proof by induction (calculus1 n and n+1)
5526
Prove that $ℤ[i]^*= \{1,-1,i,-i\}$
115506
What's wrong with this demonstration? (1 = -1)
80004
Why is $1/i$ equal to $-i$?
94627
What's wrong with this derivation that $i\hbar = 0$?
77026
Proof with inequalities
31783
Is this proof of $ab = 0$ correct?
147986
Prove: if $|z|=1$ than $\frac{z+1}{z-1}$ is an imaginary number
134202
Proof by Induction - Math
4769
Any reasons why the basis case can't be at the end of a mathematical induction proof?
138683
Proving $\prod_{i=2}^{i=n} \left(1-\frac{1}{i^2}\right) = \frac{n+1}{2n}$ by induction
54435
What is the value of $1^i$?
60900
If $A^2=-I$, Prove that $\det{A}=1$
95057
Possible fake proof of $1= -1$