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You are confusing his book Begriffsschrift ("concept notation"), where he invented what became modern predicate logic, and his later work "Grundgesetze der Arit
by cubefox 2mo ago
You are confusing his book Begriffsschrift ("concept notation"), where he invented what became modern predicate logic, and his later work "Grundgesetze der Arithmetik" (I/II) which (unsuccessfully) tried to derive arithmetic from purely logical notions, and which made heavy use of the Begriffsschrift.
- voidhorse 2mo agoNo I'm not. Russell spied the paradox in the Begriffscrift. One only needs to check the wikipedia page, even: > he announced the discovery to Gottlob Frege of the paradox in Frege's 1879 Begriffsschrift https://en.wikipedia.org/wiki/Russell%27s_paradox https://en.wikipedia.org/wiki/Russell%27s_paradox