New posts in Proof Verification

How to prove Cayley's theorem using Category Theory

Please help me spot the error in my "proof" that the sum of two irrational numbers must be irrational

Does $\sum_{n=0}^{\infty} \frac{x^2}{(1+x^2)^n}$ converge uniformly on $(-\infty,\infty)$?

An approach to the derivative of $e^x$ in Calculus 1

Is 0 divided by a non-zero indeterminate equal to 0.

Solve $2 \cos^2 x+ \sin x=1$ for all possible $x$

Terence Tao, Analysis I, Ex. 5.4.5: There is a rational between any two reals

Find all the errors, if any, in the following L'Hospital's rule argument

Show that if X and Y are i.i.d random variables such that $\mathbb{E}(X-Y)^{2}<\infty$, then $\mathbb{E}X^{2}<\infty$

Proving $A \subset B \implies A \cup B = B$