– LOCAL: maximum local caching control (UAC/NTLM authentication).Q: Proving that a number has a multiplicative inverse Is there a way to prove, without using calculator, that $a^n-1$ has a multiplicative inverse? If I start with $a^n-1=b$ I would have to prove that $b$ is not the additive inverse of $a^n-1$ and that there is not […]
