Inductive proof that every person supports the same team
37466
Questions on "All Horse are the Same Color" Proof by Complete Induction
76635
Proof through combinatorial argument
100164
Tennis tournament proof that $n + 1$ players can form a line
61635
Proving AM-GM with induction
13153
at least one element fixed by all the group
18195
Understanding of the theorem that all norms are equivalent in finite dimensional vector spaces
134588
Seeking a direct proof about nested inclusions
74452
On a uniqueness proof for solutions of $\ a + x = b\,$ in a group
5801
Combinatorial proof help
86421
Proof of the definition of cardinal exponentiation
125174
Combinatorial intuition of identity
142631
Show that A has the same cardinality as $A\setminus\{x,y,z\}$
58481
Exclusion Inclusion Principle Induction Proof
94617
Showing Consistency and Completeness implies a unique truth assignment
75157
Every Group is a Fundamental Group
115606
Proofs involving $ (A\setminus B) \cup (A \cap B)$
143374
Elegant proof that maximum of sums is, at most, sum of maximums