Stirling number of the first kind equality
138614
Proof concerning Stirling numbers of the first kind
52353
Bounding Euler's e by showing $2 \leq \left (1+ \frac{1}{n}\right)^n < 3$
34960
Lower bound for $\phi(n)$: Is $n/5  1$?
27585
Combinatorial proof of Stirling Number Identity (First Kind)
13236
Proving equality - a sum including binomial coefficient $\sum_{k=1}^{n}k{n \choose k}2^{n-k}=n3^{n-1}$
81729
Combinatorial proof of $\sum_{k=0}^{n}(-1)^{k}\binom{n}{k}(l-k)^n=n!$, using inclusion-exclusion
152911
Stirling numbers combinatorial proof
135469
Showing Equality of Winding Numbers
132728
Can the sum of the first $p$ factorials ever be a perfect power for $\ p>3\ $?
126161
Interesting property of finite integer sequence with sum 1
50830
Case of equality in Markov's inequality
123427
Proving the sum of the first $n$ natural numbers by induction
45460
Proof verification of a number theory problem involving sequences.
123757
Proving a summation inequality with induction
40784
$\sum_{k=m}^{n}(-1)^k\binom{n}{k}\binom{k}{m}=0, n>m\geq 0$
58663
How to show that if $\phi(n)$ equals to n itself, then n must be 1?
125028
Prove the following equality using mathematical induction: