Augustus De Morgan's Boolean Algebra

History and Philosophy of Logic 26 (2):75-91 (2005)
De Morgan's Formal Logic, which was published on virtually the same day in 1847 as Boole's The Mathematical Analysis of Logic, contains a logic of complex terms (LCT) which has been sadly neglected. It is surprising to find that LCT contains almost a full theory of Boolean algebra. This paper will: (1) provide some background to LCT; (2) outline its main features; (3) point out some gaps in it; (4) compare it with Boole's algebra; (5) show that it is a lattice-theoretical formulation of Boolean algebra; (6) discuss some issues of historical priority; and (7) conclude with the puzzle of LCT's lack of influence
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DOI 10.1080/01445340412331323124
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The Rise of the Algebra of Logic.Boruch A. Brody - 1967 - Dissertation, Princeton University

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