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Proof

A proof is a chain of steps where each one is forced by the ones before it. The Greeks made it the heart of mathematics, and Euclid’s Elements shows it at work: a few plain starting points and a long tower built on them.

Connects to

• Math
• Axioms
• what it says
• what true means
• What can we know for certain?
• When is a proof enough?

Sources

1. Wikipedia: Mathematical proof
2. Wikipedia: Euclid’s Elements