Single Idea 14506

[catalogued under 5. Theory of Logic / B. Logical Consequence / 4. Semantic Consequence |=]

Full Idea

'Roses are red; therefore, roses are colored' may be necessarily truth-preserving, but it would not be classified as logically valid by standard systems of logic.

Gist of Idea

'Roses are red; therefore, roses are colored' seems truth-preserving, but not valid in a system

Source

Kathrin Koslicki (The Structure of Objects [2008], 9.3.2)

Book Reference

Koslicki,Kathrin: 'The Structure of Objects' [OUP 2008], p.242