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Ideas of Augustus De Morgan, by Text

[British, 1806 - 1871, Professor at King's College, London.]

1846

works

p.20

17743

De Morgan introduced a 'universe of discourse', to replace Boole's universe of 'all things' [Walicki]

1859	On the Syllogism IV

p.21

17744

De Morgan started the study of relations and their properties [Walicki]

p.94

13501

De Morgan found inferences involving relations, which eluded Aristotle's syllogistic [Hart,WD]