Rudolf Carnap (May 18, 1891, Ronsdorf, Germany - September 14, 1970, Santa Monica, California) was an influential philosopher who was active in central Europe before 1935 and in the United States thereafter. He was a leading member of the Vienna Circle and a prominent advocate of logical positivism. Wikipedia
The definitive Wikipedia entry for Rudolf Carnap. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Rudolf_Carnap
Born in 1891 in Ronsdorf, Germany, Rudolf Carnap was educated at the Universities of Freiburg and Jena. www.library.pitt.edu/libraries/special/asp/carnap.html