Contribution of our ancestors for the development of mathematic science

The article is devoted to lightening contribution of our ansectors Al-Khorazmiy, Abu Nasr Forobiy, Ahmad Farg’oniy, Abu Ali Ibn Sino, Abu Rayhon Beruniy, Giyosiddin al-Koshiy, Omar Khayyam, Nasriddin at-Tusiy for the development of mathematician science. As well, on the basis of that knowledge to enlarge their views and enrich their knowledge, and forming patriotic fillings and national pride is discussed.