In particular, the so called mountain pass theorem he established with Paul Rabinowitz is nowadays a classical tool in the context of nonlinear analysis problems.
Pope John Paul II | Paul McCartney | Paul Simon | Paul Newman | Pope Paul VI | St Paul's Cathedral | Paul | Jean-Paul Sartre | Peter Paul Rubens | Paul Robeson | Paul Anka | St. Paul | Paul Hindemith | Paul Revere | Paul Weller | Paul Klee | Saint Paul | Paul Kelly | Paul Cézanne | John Paul Jones | Paul Ryan | Paul Gauguin | Paul Oakenfold | Jean Paul Gaultier | Paul the Apostle | Paul Keating | Paul Auster | Pope John Paul I | Paul Martin | Paul Whiteman |