4 ideas
19090 | If we can't check our language against experience, philosophy is just comparing beliefs and words [Rorty] |
17744 | De Morgan started the study of relations and their properties [De Morgan, by Walicki] |
13501 | De Morgan found inferences involving relations, which eluded Aristotle's syllogistic [De Morgan, by Hart,WD] |
16771 | A composite is a true unity if all of its parts fall under one essence [Scheibler] |