Ideas from 'On the Syllogism IV' by Augustus De Morgan [1859], by Theme Structure

green numbers give full details    |     back to texts     |     expand these ideas

---

5. Theory of Logic / E. Structures of Logic / 6. Relations in Logic

17744

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

13501

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