"Anania of Shirak" . . "Shirakatsi's numeral system" . . . . "0610" . . . . . . "Anania Shirakatsi" . . . . . . . . . . . . "Shirakatsi" . . . . . . . "Ananias of Shirak" . "0685" . "Medal of Anania Shirakatsi" . . "arithmetic book by Anania Shirakatsi" . . . . . . . . . . . . . . . . . . . . . . . . "Anania Shirakatsi Medal" . . . . . . . . . . . . . . "Anania Shirakatsi" . . . . . . . . . . . . . . . . . . .