New post in Proof-explanation

Understanding the proof that the series $\sum \frac{1}{n^2}$ is convergent

August 21st, 2022

July 23rd, 2022

Singular value decomposition proof

December 15th, 2022

if A then B & if not A then C

December 8th, 2022

3 Prisoners problem question: I think Prisoner C is correct.

September 1st, 2020

$\det(aI-T) = 0$ implies $a$ is an eigenvalue of $T$

February 19th, 2020

How is $f(x)=\tan(x)$ bijective for $(-\frac{\pi}{2}, \frac{\pi}{2})$ and not for an unrestricted domain?

November 16th, 2020

How to prove the intersection of functions is a function

November 28th, 2020

March 17th, 2020

March 16th, 2020

Show that the function $f$ is attain its minimum or maximum value and bounded on $\mathbb R$

January 14th, 2020

August 1st, 2022

August 1st, 2022

August 8th, 2020

March 7th, 2020

Proving Gale-Shapley algorithm completes in $O(n^2)$

February 23rd, 2020

August 1st, 2022

July 4th, 2020

Prove that (A-B) - C ⊆ A - C

September 18th, 2020

July 12th, 2020

How to prove that $6n^2 + 20n \notin \Omega{(n^3)}$

September 1st, 2020

Why do I have to negate the definition of an intersection to prove that complement (A∩B) = complement(A) ∪ complement(B)?

October 18th, 2020

Discrete Math Induction Proof for summation

December 7th, 2020

Finding Variance of the Hypergeometric distribution

November 8th, 2020

Prove given A and B ∈ 𝝡n(ℝ) , and A and B are symmetric then AB is symmetric

November 13th, 2020

May 6th, 2020

April 29th, 2020

August 1st, 2022

April 14th, 2020

Union and Intersection is Associative/Family of Sets

August 27th, 2020