Logical Validity   

Logical Validity

Commens
Digital Companion to C. S. Peirce
Logical Validity
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1880 | On the Algebra of Logic | W 4:167-168; CP 3.166, 168

…a leading principle, which contains no fact not implied or observable in the premisses, is termed a logical principle, and the argument it governs is termed a complete, in contradistinction to an incomplete, argument, or enthymeme.

[—]

We may here distinguish between logical and extralogical validity; the former being that of a complete, the latter that of an incomplete argument.