1724-1804 1845-1918 1848-1925 1859-1938 1872-1970 1889-1951 1903-1930 192 193 20thcentury 700=aacr2 algebraicfunctions algebraiclogic analysis(philosophy) aristotle arithmetic benno bertrand cantor congresses contributionsinconceptofreferencefrege contributionsinconceptofsensefrege contributionsinsemanticsfrege edmund foundations frankplumpton georg gottlob history husserl immanuel kant kerry languageandlanguages logic ludwig mathematics meaning(philosophy) object(philosophy) phenomenology philosophy philosophyandscience ramsey reference(philosophy) russell semantics(philosophy) sense(philosophy) silence(philosophy) symbolicandmathematical symbolicandmathematicallogic truthfulnessandfalsehood wittgenstein