New posts in proof-writing

Showing that the "left-hand limit function" is left continuous

real-analysis analysis limits proof-writing

Questions about Proof of Lusin's Theorem

analysis proof-writing

Proof for the "Fundamental Calculus Theorem" for two variables.

calculus multivariable-calculus proof-writing

How to show that the fabius function is nowhere analytic?

complex-analysis proof-writing implicit-differentiation

How to determine the scope of a proof?

proof-writing convention

How much rigour in proofs?

proof-writing learning

Show that a vector that is orthogonal to every other vector is the zero vector

linear-algebra proof-writing

Help to clarify proof of Euler's Theorem on homogenous equations

calculus proof-writing

Integration trick $\int^{2\pi}_{0} f(a+ r \cos \theta, b+r\sin \theta)d\theta=2\pi f(a,b)$

integration proof-writing harmonic-functions

Numerical method for finding the square-root.

numerical-methods recurrence-relations proof-writing contest-math recursive-algorithms

A proof using the contrapositive

proof-writing

$1_{\bigcup_{i=1}^{\infty}A_n}=\sum_{n=1}^{\infty}1_{A_n}$

general-topology proof-writing

On Ramanujan's approximation, $n!\sim \sqrt{\pi}\big(\frac ne\big)^n\sqrt [6]{(2n)^3+(2n)^2+n+\frac 1{30}}$

limits proof-writing asymptotics approximation radicals

Convergence of sum of triangular array of random variables

probability-theory convergence-divergence proof-writing martingales

Does continuity of $f$ imply $f^{-1}(\bar A)\subset\overline{f^{-1}(A)}$?

general-topology metric-spaces proof-writing continuity examples-counterexamples

Being too pedantic with writing proofs

proof-writing soft-question self-learning

How can I derive what is $1\cdot 2\cdot 3\cdot 4 + 2\cdot 3\cdot 4\cdot 5+ 3\cdot 4\cdot 5\cdot 6+\cdots + (n-3)(n-2)(n-1)(n)$ ??

calculus sequences-and-series summation proof-writing binomial-coefficients

Formalize a proof without words of the identity $(1 + 2 + \cdots + n)^2 = 1^3 + 2^3 + \cdots + n^3$

summation proof-writing

Evaluate the general infinite square root [duplicate]

calculus real-analysis analysis derivatives proof-writing

A challenging geometry proof?

geometry proof-writing euclidean-geometry conic-sections