Early Numeration - Tally Sticks, Counting Boards, and Sumerian Proto-Writing
3.1. The Sumerian MAŠ sign with the word-meaning of '(male) goat' was a simple cross. The Sumerian LU or UDU sign with the word-meanings of 'many' and '(male) sheep' was a cross inside a circle. The symbol of a cross inside a circle having the abstract .....