How many letters does the top answer for “mathematical analysis philosopher” have?

The most common answer is leibniz (7 letters).

Crossword clue: mathematical analysis philosopher

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

leibniz 7 letters wd-fact-v3

German philosopher and mathematician who thought of the universe as consisting of independent monads and who devised a s

poincare 8 letters wd-fact-v3

mathematical logic philosopher 50% similar → bernays, gentzen

mathematical physics philosopher 50% similar → poincare