| Memorial of Slovak mathematicians — July | |
| 1. 7. 1917 | Štefan Novoveský , was born. |
| 1. 7. 1986 | Pavol Šoltés , died. |
| 2. 7. 1964 | Karel Koutský , died. |
| 3. 7. 1965 | Hana Kirchheimová , was born. |
| 6. 7. 1956 | Gabriel Čeněk , died. |
| 6. 7. 1476 | Regiomontanus , died. |
| 9. 7. 1994 | Milan Kolibiar , died. |
| 9. 7. 1724 | Pavol Makó , was born. |
| 10. 7. 1920 | Michal Harant , was born. |
| 17. 7. 1912 | Fridrich Zavarský , was born. |
| 17. 7. 1993 | Štefan Znám , died. |
| 18. 7. 1995 | Michal Harant , died. |
| 19. 7. 1834 | Karol Hadaly , died. |
| 19. 7. 1919 | Zdeno Vlachynský , was born. |
| 20. 7. 1713 | Henrich Berzeviczy , died. |
| 21. 7. 1919 | Ján Korch , was born. |
| 21. 7. 1844 | Augustín Scholtz , was born. |
| 22. 7. 1995 | Otakar Borůvka , died. |
| 22. 7. 1991 | Michal Zöldy , died. |
| 24. 7. 1993 | Igor Kluvánek , died. |
