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gnox at Aug 23, 2017 11:51 PM
gnox
jeffdown1

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Continuation from p 15.

So much of the system of existential
graphs as I have thus far described I
term the alpha part of the system. I
shall presently describe a beta part, and
in another lecture the system will be
completed by a gamma part.

There are certain ways in which
graphs that are scribed on the sheet
of assertion can be modified without
any danger of changing a true graph
into a false one. Transformations
according to any general method
that can never change a true graph
into a false one I term permissible
transformations. In particular, those

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Manuscripts, Logic Notebook, Robin Catalogue, SPIN Omeka Page