Al-Khwarizmi (c.780-c.850), Persian scholar. One of the major advances made by Muhammad ibn Musa al-Khwarizmi was in algebra where he proposed the use of a symbol (an empty circle or 'sifr') to represent the absence of a number. This is known as zero and was an important advance in the simplification and representation of calculations. Al-Khwarizmi worked in Baghdad, and also produced works in astronomy and geography. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Brown, Gary |
Bildgröße: | 3238 px × 5398 px |
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