1 янв 1879 г. - Gottlob Frege
Описание:
 Gottlob Frege is understood by many to be the father of analytic philosophy, concentrating on the philosophy of language, logic, and mathematics.
1) Defined Frege's propositional calculus (first-order logic)
2) He defined Frege's propositional predicate calculus
3)These were vital in the development of theoretical computer science. 
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