New posts in proof-explanation

Prove that if $w \in \mathbb{Z}[\sqrt{3}]$ and $N(w)$ is a prime, then $w$ is prime also

Confusion regarding the proof steps of the topology generated by a subbasis

Sufficiency of Lebesgue's Criterion for Riemann Integrability

Manipulating expression $(\frac{1}{4}+\frac{1}{2^{n+1}})(1-\frac{1}{2^{n+1}})$ in inductive step.

Inequality proof, why isn't squaring by both sides permissible?

Verification of the limit of a succession

Collatz Conjecture, why a rate of change of $*4$ in the following?

Prove $-(-a)=a$ using only ordered field axioms

Soundness vs completeness, am I understanding? And proving soundness?

If $F$ is a field, then $F[x]$ is a principal ideal domain proof question

How does $\ x_i = (x_i - \overline{x})$ in the proof for ordinary least squares regression?

On elementary proofs of Fermat's Last Theorem

Understanding a proof that $2x + 3y$ is divisible by $17$ iff $9x + 5y$ is divisible by $17$

Wikipedia Proof of Skolem-Noether Theorem

Why $|z_1z_2|^2 = |z_1|^2|z_2|^2$ implies $|z_1z_2| = |z_1||z_2|$

Elementary example of Grothendieck's style of proof?

Question about a proof of: If $P$ is a finite $p$-group and $\langle 1\rangle\neq N\trianglelefteq P$, then $N\cap Z(P)\neq\langle 1\rangle$.

Suppose $f_{n} \stackrel{L_{2}}{\rightarrow} f$,$g_{n} \stackrel{L_{2}}{\rightarrow} g$. Prove that $ \langle f_n,g_n \rangle\to\langle f,g\rangle $

Reflection inside spherical mirror

Derive the error for the Midpoint rule