Heavily influential to all of this was Frege's 'on Sense and Reference'. Best link I can give from my mobile is to a search, where you can find pdfs and the hel

Heavily influential to all of this was Frege's 'on Sense and Reference'. Best link I can give from my mobile is to a search, where you can find pdfs and the helpful wiki entry: https://www.google.com/search?q=on+sense+and+reference https://www.google.com/search?q=on+sense+and+reference