Looking for proof of formula in WolframMathWorld article
83981
How to prove those "curious identities"?
51187
Having trouble proving natural transformation horizontal composition equality of two formulas using a diagram.
147403
Formulas for calculating pythagorean triples
144836
How to prove that $\frac{(mn)!}{m!(n!)^m}$ is an integer?
44362
Citing the source of an equation?
131140
Understanding ProofWiki's proof of differentiation of sine power series
28374
calculus expressions
57894
In a proof of the Sherman-Morrison formula why does $(I+wv^T)^{-1}=I-\frac{wv^T}{1+v^Tw}$
57215
Stuck on formal proofs. Not sure how to continue
110441
Closed form for a formula with a summation over $i\binom{n-i}{k-1}$, and combinatorial proof?
148330
Induction Proof for $F_{2n} = F^2_{n+1} - F^2_{n-1}$
129860
Find a formula for this sequence (and prove it).
158004
A formula for $1^4+2^4+...+n^4$
147111
Where is the Proof for the Sum-to-Product rule derrived from?
45204
Combinatorial proofs: having a difficult time understanding how to write them out
113986
Fermat's Last Theorem: implications (there is no new proof)
21121
Express $w$ and $1/w$ for $w=\frac {\sqrt2+\sqrt3}{\sqrt5-\sqrt3}$ in the simplest form with a rational denominator