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Unformatted text preview: Two number systems Multiplicative Grouping (Shang and later) Symbols for 1-9 (1-3 are easy) and powers of 10 Communicate same as place-value more explicitly but less eFciently. Counting-rod numerals (Han, 100 BC) Looks like ... Dierent for odd or even place Greek Sparta settled in 1200 BC Two number systems Attic 500 BC Acrophonic (used rst letters of corresponding words) Additive like Hieroglyphic and Roman Ionian Traced back to 450 BC, won out about 300 BC Cipher Used Greek alphabet (plus 3 old letters) in cipher system How does this extended system in order match up with ours? Primes...
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This note was uploaded on 12/29/2011 for the course MATH 378 taught by Professor Wen during the Fall '10 term at SUNY Stony Brook.
- Fall '10