This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Antonn Sucharda . cs Antonn Sucharda esk matematik vysokokolsk profesor before math muni cz html Creator Unknown other versions Custom marker AnonymousEU Uploaded with Antonn Sucharda
Page 2023 Free-images.com. All images are Public Domain