Figure 1. Folio 2r of al-Hassâr's Kitâb al-Bayân bearing at the bottom both the Western and the Eastern Arabic forms of the nine numerals. Source: http://dewey.library.upenn.edu/sceti/ljs/PageLevel/index.cfm?ManID=ljs293&Page=3.
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This article was a talk given at the 7th Maghrebi Colloque...
Figure 1. A moon and sun figure of an Almanac. Topkapi Palace Museum, R 1711.
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For more than a thousand years the Muslim East and the...