I'm looking for references and "loci" regarding the concepts of opposition, distinction, diversity, and negation.
I'm not certain if one must distinguish the case in which A and B stand for concepts or propositions and that which stand for things.
As examples, I can think of the following:
- Plato: Sophist
- Aristotle: On Interpretation
- Aquinas: Summa Theologiae ("In which sense is the Son other than the Father?")
- Micraelius: Lexicon Philosophicum (diversity is a genus having as species opposition and distinction)
- Kant: the distinction between logical opposition and real opposition
- Levinas: the absolute opposition of "the Other".