Combining Texts

Ideas for 'Ethical Studies', 'Iteration Again' and 'Introduction: Truth and Truth-Making'

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2 ideas

4. Formal Logic / D. Modal Logic ML / 7. Barcan Formula

18350	Truth-maker theorists should probably reject the converse Barcan formula [Rami]
	Full Idea: There are good reasons for the truth-maker theorist to reject the converse Barcan formula.
	From: Adolph Rami (Introduction: Truth and Truth-Making [2009], note 16)
	A reaction: In the text (p.15) Rami cites the inference from 'necessarily everything exists' to 'everything exists necessarily'. [See Williamson 1999]

4. Formal Logic / F. Set Theory ST / 5. Conceptions of Set / f. Limitation of Size

13547	Limitation of Size is weak (Fs only collect is something the same size does) or strong (fewer Fs than objects) [Boolos, by Potter]
	Full Idea: Weak Limitation of Size: If there are no more Fs than Gs and the Gs form a collection, then Fs form a collection. Strong Limitation of Size: A property F fails to be collectivising iff there are as many Fs as there are objects.
	From: report of George Boolos (Iteration Again [1989]) by Michael Potter - Set Theory and Its Philosophy 13.5