Least Upper Bound Property

inf(S) = -sup(-S)

Least upper bound proof

Can you crack this beautiful equation? – University exam question

How Imaginary Numbers Were Invented

Maximum and Minimum

Supremum of a set

Real Analysis | The Supremum and Completeness of ℝ

I visited the world's hardest math class

1. The Geometry of Linear Equations

Permutations and Combinations Tutorial

The SAT Question Everyone Got Wrong

What staying up all night does to your brain - Anna Rothschild

Something Strange Happens When You Keep Squaring

Construction of the Real Numbers

Imaginary numbers aren't imaginary

Can we NOT solve x^4+64=0 like this?

What is a field ?

What is a real number?

Hardest Exam Question | Only 8% of students got this math question correct

Archimedean Property