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1. | French lawy who worked in the foundations of calculus |

2. | Scottish scholar who invented logarithms |

3. | Polish astronomer and mathematician who proposed the earth's yearly motion around a stationary sun |

4. | born in Italy, took part in the Los Alamos project to build the atomic bomb |

6. | first account on non-Euclidian geometry to appear in print |

7. | constructed the theory of complex functions by means of power series |

10. | investigated number theory, famous for orthogonal polynomials |

13. | pseudonym for Charles Dodgson |

14. | produced a method of determining when a general equation could be solved by radicals |

15. | "I think, therefore I am." |

19. | developed a general calculus for vectors |

21. | originator of algebraic topology |

23. | investigated "integration in infinitely many dimensions" |

25. | between 1820 and 1823 prepared a treatise on a complete system of non-Euclidean geometry |

27. | proved the stability of the solar system, put the theory of mathematical probability on a sound footing |

28. | work in geometry had the greatest influence in that area after Euclid |

29. | Greek mathematician who wrote "The Elements" |

30. | Contributed to the theory of elliptical functional |

32. | approached logic by reducing it to simple algebra |

36. | founded set theory |

38. | recent mathematician who worked in probability, analysis, number theory, geometry, combinatorics, and mathematical physics |