New posts in alternative-proof

Why does Rudin define $k = \frac{y^n-x}{n y^{n-1}}$ or $h < \frac{x - y^n}{n(y+1)^{n-1}}$ when he tries to prove that every real x has a nth root?

real-analysis proof-verification proof-writing proof-explanation alternative-proof

Is there a simpler proof of this fact in analysis?

real-analysis calculus limits proof-verification alternative-proof

Prove $\sum_{n=0}^\infty(-1)^n(\overline{H}_n-\ln2)^2=\frac{\pi^2}{24}$

calculus integration sequences-and-series alternative-proof harmonic-numbers

A triple integral involving $\text{Li}_2$

sequences-and-series special-functions alternative-proof

SOS: Proof of the AM-GM inequality

inequality alternative-proof a.m.-g.m.-inequality sum-of-squares-method

Geometric proof of a trig identity on $\cos t \cos u\cos v$

geometry trigonometry alternative-proof proof-without-words

Proving that $ \chi(G) = \omega(G) $ if $ \bar{G} $ is bipartite.

graph-theory alternative-proof coloring

Every non-star tree is (isomorphic to) a subgraph of its complement

graph-theory alternative-proof trees

Uniform Convergence verification for Sequence of functions - NBHM

real-analysis proof-verification uniform-convergence alternative-proof

Prove $\sum_{n=0}^\infty(-1)^n(\overline{H}_n-\ln2)^3=-\frac5{16}\zeta(3)$

calculus integration sequences-and-series alternative-proof harmonic-numbers

Proving (without using complex numbers) that a real polynomial has a quadratic factor

abstract-algebra polynomials real-numbers alternative-proof

Prove that in a parabola the tangent at one end of a focal chord is parallel to the normal at the other end.

recreational-mathematics conic-sections alternative-proof

A longer series is better for a better team: Can you see this at a glance?

probability alternative-proof

Proof of the duality of the dominance order on partitions

combinatorics integer-partitions alternative-proof

Construct quadrangle with given angles and perpendicular diagonals

geometry alternative-proof geometric-construction

Prove that there exists a sequence $(x_n)$ such that $\sum_n a_n x_n$ diverges

real-analysis sequences-and-series functional-analysis alternative-proof

How can I complete this proof by contradiction?

discrete-mathematics proof-verification alternative-proof

Loch Ness monster and Jacob's Ladder Surfaces are NOT homeomorphic

algebraic-topology differential-topology alternative-proof surfaces riemann-surfaces

The multiplicative groups $\mathbb{Q}^\ast$ and $\mathbb{R}^\ast$ are not isomorphic [duplicate]

group-theory alternative-proof group-isomorphism

$e^{i\theta}$ $=$ $\cos \theta + i \sin \theta$, a definition or theorem?

complex-numbers alternative-proof