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Single Idea 9647

[filed under theme 6. Mathematics / B. Foundations for Mathematics / 2. Proof in Mathematics ]

Full Idea

The celebrity of the famous proof in 1976 of the four-colour theorem of maps is that a computer played an essential role in the proof.

Clarification

What is the minimum number of colours needed for a good map?

Gist of Idea

Computers played an essential role in proving the four-colour theorem of maps

Source

James Robert Brown (Philosophy of Mathematics [1999], Ch.10)

Book Ref

Brown,James Robert: 'Philosophy of Mathematics' [Routledge 2002], p.154


A Reaction

The problem concerns the reliability of the computers, but then all the people who check a traditional proof might also be unreliable. Quis custodet custodies?


The 7 ideas with the same theme [establishing new certainties from a starting point]:

To decide some questions, we must study the essence of mathematical proof itself [Hilbert]
It seems absurd to prove 2+2=4, where the conclusion is more certain than premises [Russell]
For intuitionists, proof is inherently informal [Shapiro]
There is no limit to how many ways something can be proved in mathematics [Brown,JR]
Computers played an essential role in proving the four-colour theorem of maps [Brown,JR]
Hilbert proofs have simple rules and complex axioms, and natural deduction is the opposite [Beall/Restall]
Computer proofs don't provide explanations [Horsten]