Examples from the Web for frege
That two phrases may have different meanings and the same denotation was discovered by Alice and Frege.
The same afternoon he was taken ill in Madame Frege's house.Fragments of an Autobiography|Felix Moscheles
Frege next asks the question: When do two collections have the same number of terms?
This definition, as Frege (expressing it in slightly different terms) showed, yields the usual arithmetical properties of numbers.