Rabanovich VI, Ehrhardt T, Samoilenko YS, Silberman D. On the decomposition of the identity into a sum of idempotents. MFAT [Internet]. 2001 Jun. 25 [cited 2026 Feb. 4];7(2):1-6. Available from: https://zen.imath.kiev.ua/index.php/mfat/article/view/144