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Memorial of Slovak mathematicians — April
5. 4. 1987 Juraj Bosák , died.
6. 4. 1933 Juraj Bosák , was born.
9. 4. 1898 Jan Srb , was born.
12. 4. 1909 František Jurga , was born.
14. 4. 1792 Maximilián Hell , died.
16. 4. 1999 Alojz Wawruch , died.
18. 4. 1859 Jozef Wolfstein , died.
19. 4. 1887 Nikolaj Podtjagin , was born.
19. 4. 1997 Jozef Rovder , died.
20. 4. 1991 Anton Kotzig , died.
22. 4. 1908 Viktor Svitek , was born.
24. 4. 1648 Daniel Fröhlich , died.
24. 4. 1980 Eduard Haluška , died.
30. 4. 1995 Ján Korch , died.