Problem with $0! = 1$
2959
Prove $0! = 1$ from first principles
12402
Showing a function on $[0,1]$ is the zero function
134495
What is wrong with \ifnum#1=0.09\relax?
129151
Why do computers only use 0 and 1?
8034
Can $n!$ be a perfect square when $n$ is an integer greater than $1$?
122076
A one line proof that one is zero using Mathematica 10
124782
Hint for $(n!+1,(n+1)!)$, stuck at $ (n!+1,n+1)$
32886
What is the difference between != and =! in Java?
43834
Simple Complex Number Problem: $1 = -1$
26055
Multiplication by $0$ in a field
19628
What is wrong with this fake proof $e^i = 1$?
122916
Does $[0.9999....]=1$?
145413
Floating point comparison `a != 0.7`
39908
Finding the error in this proof that 1=2
9920
$(n^2 - 1)!$ is a multiple of $(n!)^n$
107390
Why is (-1)(-1) = 1?
126184
Integer division always zero