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.
Sheykh Bahai Kholasat alHesab The summa of arithmetics.svg Left to right addition own Nevit Dilmen talk Cczero Nevit Dilmen SVG Arithmetic Shaykh Bahai
Page 2023 Free-images.com. All images are Public Domain