qualitative identity

noun

1. logic the relation that holds between two relata that have properties in common. This term is used to distinguish many uses of the words identical or same in ordinary language from strict identity or numerical identity

Example Sentences

This qualitative identity of emission and absorption as regards wave-length can be most exactly and easily verified for luminous rays, and we are justified in assuming that the relation holds with the same exactitude for non-luminous rays, although in many cases the experimental proof is less complete and exact.

From Project Gutenberg

Balfour Stewart gave a number of striking illustrations of the qualitative identity of emission and absorption of a substance.

From Project Gutenberg

There is qualitative identity, or there is not.

From Project Gutenberg

When we generalize the current concepts of motion or force beyond individual displays and relative measures of quantity, we recognize their qualitative identity, and appreciate the logical unity under which we must give them abstract expression.

From Project Gutenberg

We name the force which draws the water earthward 'gravity,' and that which draws atoms together 'chemical affinity'; but these different names must not mislead us regarding the qualitative identity of the two forces.

From Project Gutenberg