All I know is Von Plato and some random readings in foundations for my degree, but this[1] seems to indicate Russel met Wittgenstein after Principia was complet

All I know is Von Plato and some random readings in foundations for my degree, but this[1] seems to indicate Russel met Wittgenstein after Principia was completed. I also believe that Russel traveled to meet Frege in his quest for writing the book. No doubt, as I said above, Principia was very influenced by Frege's ideas. But it absolutely did not use Frege's notation(which was a disaster as I describe above). Von Plato really emphasizes how much of an advance the notation of Principia was. And seriously, it's remarkable how new modern mathematical logic notation is, it didn't have true modern form 'till the 20s or 30s. [1] "It was October 1911, volume one of Principia Mathematica was newly out, and Bertrand Russell, fellow of Trinity College, Cambridge, was having his tea when a young man suddenly appeared. He introduced himself as "Loot'vig Vit'gun-shteyne". https://www.independent.co.uk/life-style/when-ludwig-wittgenstein-met-bertrand-russell-1596995.html https://www.independent.co.uk/life-style/when-ludwig-wittgen...