Across
- 2. Famous prediction of Halley's Comet in 1759
- 10. Wrote "Geometria indivisibilibus continuorum" in 1635
- 11. Author of monumental "Traité des substitutions"
- 12. Gives name to a matrix decomposition
- 14. Wrote "Dimension Theory" in 1941
- 17. Gives name to rule in determinant theory
- 19. Gives name to an indicatrix
- 20. Known expert in graph theory
Down
- 1. Improved the logical system of Frege
- 3. Introduced parallel transport in Riemannian manifolds
- 4. Gives name to an important projection of the sphere
- 5. Gives name to a relevant class of numbers
- 6. Gives name to a fourth-order class three surface
- 7. Generalized the Lebesgue integral
- 8. Famous for binational transformations
- 9. Systematized descriptive geometry
- 13. Discovered "ideal complex numbers"
- 15. Pioneer in the study of nilpotent Lie groups
- 16. Gave name to the Luzitania group in the 1920s
- 18. Studied probability in chains