Topic: mathematics by proofs and refutations
Topic: definition by example
BETA: … It now seems to me that no conjecture … am against dubbing these exceptions 'monsters' or 'pathological … No: they are just exceptions. [method of exception-barring] …  For all polyhedra that have no cavities …
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Topic: mathematics by proofs and refutations (31 items)
Topic: definition by example (26 items)