Infinite Series
Proving Brouwer's Fixed Point Theorem
The proof for Brouwer's Fixed Point Theorem uses a bridge between geometry and algebra.
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Infinite Series
Sponsorship
Infinite Series
Telling Time on a Torus
What shape do you most associate with a standard analog clock? Circle or... torus?
Infinite Series
What Does It Mean to Be a Number? (The Peano Axioms)
Could you explain numbers to someone without using the notion of a number?