Crossword clues for the word: RIEMANN The word RIEMANN has appeared as an answer to at least 5 crossword clues on different crossword puzzles. Crossword clues for RIEMANN Showing 1 to 5 of 5 results Clue(s) German mathematician Bernhard German mathematician Bernhard whose eponymous hypothesis is one of the great unsolved problems German mathematician for whom a branch of geometry is named German mathematician who inspired Einstein Mathematician with a hypothesis unproven since 1859