| Memorial of Slovak mathematicians — September | |
| 1. 9. 1943 | Ivan Korec , was born. |
| 2. 9. 1910 | Andrej Vrábel , was born. |
| 2. 9. 1832 | František Xaver Zach , died. |
| 3. 9. 1952 | Karol Walek , died. |
| 6. 9. 1979 | Bohumír Parízek , died. |
| 8. 9. 1939 | Ján Futák , was born. |
| 13. 9. 1743 | František Rausch , was born. |
| 13. 9. 1878 | Karol Walek , was born. |
| 14. 9. 1890 | Bedřich Šofr , was born. |
| 15. 9. 1947 | Anton Mišík , died. |
| 15. 9. 1773 | Anton Radics , died. |
| 15. 9. 1904 | Viera Šimčisková , was born. |
| 16. 9. 1983 | Evžen Říman , died. |
| 17. 9. 1981 | Ladislav Šteffko , died. |
| 18. 9. 1997 | Ivan Dobrakov , died. |
| 19. 9. 1703 | Michal Lipsicz , was born. |
| 19. 9. 1891 | Jozef Maximilián Petzval , died. |
| 20. 9. 1993 | Ján Ivan , died. |
| 26. 9. 1909 | Karol Rečičár , was born. |
