Formal Logic

​

FORMAL LOGIC:

OR,

The Calculus of Inference,

Necessary and Probable.



BY
AUGUSTUS DE MORGAN
Of Trinity College Cambridge,
Fellow of the Cambridge Philosophical Society, Secretary of the Royal
Astronomical Society, Professor of Mathematics in
University College London.



Καλὸς ὁ νόμος ἐάν τις αὐτῷ νομίμως χρῆται.





LONDON:
TAYLOR AND WALTON,
Booksellers and Publishers to University College,
28, Upper Gower Street.
M DCCC XLVII


This work was published before January 1, 1930, and is in the public domain worldwide because the author died at least 100 years ago.

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