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margstr at May 15, 2019 04:07 PM

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statement. I regret that the brevity of its course forbids my illustrating it.
The beta part of the system of existential graphs is distinguished from the alpha-part by the presence of ligatures in its graphs; and it is therefore natural to think that the distinction between alpha-possibility and beta possibility lies in the latter's taking account of the relation of identity. But it could easily be demonstrated that this is not the truth of the matter. The true distinction lies in the fact that beta possibility takes account of individuals, so that wheras in the alpha part all the spots are regarded

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