Ideas of James Baillie, by Theme

[British, fl. 1988, Taught at the University of Portland, Oregon.]

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5. Theory of Logic / D. Assumptions for Logic / 4. Identity in Logic
In logic identity involves reflexivity (x=x), symmetry (if x=y, then y=x) and transitivity (if x=y and y=z, then x=z)
     Full Idea: In logic identity is an equivalence relation, which involves reflexivity (x=x), symmetry (if x=y, then y=x), and transitivity (if x=y and y=z, then x=z).
     From: James Baillie (Problems in Personal Identity [1993], Intr p.4)