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Who were the main members of the Vienna Circle?

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Positivism Scottish philosopher David Hume, oil on canvas by Allan Ramsay, 1766; in the Scottish National Portrait Gallery, Edinburgh.

The Vienna Circle was a prominent group of philosophers, scientists, and mathematicians founded and led by the epistemologist Moritz Schlick.12

The core members of the group included:
* Gustav Bergmann1
* Rudolf Carnap12
* Herbert Feigl1
* Philipp Frank12
* Kurt Gödel12
* Hans Hahn32
* Otto Neurath12
* Friedrich Waismann1

While not formal members of the Vienna Circle, the group was significantly influenced by the work of Ludwig Wittgenstein and Bertrand Russell, as well as the earlier philosophies of Ernst Mach and Ludwig Boltzmann. Additionally, thinkers such as Carl Hempel and Hans Reichenbach were associated with a cognate group in Berlin, the Society for Empirical Philosophy.321