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القرآن الكريم وعلومه
العقائد الإسلامية
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الرجال والحديث 
سيرة الرسول وآله 
علوم اللغة العربية 
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الأخلاق والأدعية 
التاريخ 
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علم الفيزياء 
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علم الأحياء 
الرياضيات 
الهندسة المدنية 
الزراعة 
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القانون 
اللغة الأنكليزية 
الأخبار 
الإعلام 
مكتبة الصور 
أقلام بمختلف الألوان 
إضاءات
مفتاح
أجوبة الإستفتاءات الشرعية
وثائقيات
تاريخ الرياضيات
الرياضيات في الحضارات المختلفة
الرياضيات المتقطعة
الجبر
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المعادلات التفاضلية و التكاملية
التحليل
علماء الرياضيات | Govindasvami |
 1064
 02:04 صباحاً
date: 21-10-2015 |
Author : R C Gupta 
Book or Source : Fractional parts of Aryabhata,s sines and certain rules found in Govindasvami,s Bhasya on the Mahabhaskarya 
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Date: 21-10-2015
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Date: 21-10-2015
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Born: about 800 in India
Died: about 860 in India
Govindasvami (or Govindasvamin) was an Indian mathematical astronomer whose most famous treatise was a commentary on the Mahabhaskariya of Bhaskara I.
Bhaskara I wrote the Mahabhaskariya in about 600 A. D. It is an eight chapter work on Indian mathematical astronomy and includes topics which were fairly standard for such works at this time. It discussed topics such as the longitudes of the planets, conjunctions of the planets with each other and with bright stars, eclipses of the sun and the moon, risings and settings, and the lunar crescent.
Govindasvami wrote the Bhasya in about 830 which was a commentary on the Mahabhaskariya. In Govindasvami's commentary there appear many examples of using a place-value Sanskrit system of numerals. One of the most interesting aspects of the commentary, however, is Govindasvami's construction of a sine table.
Indian mathematicians and astronomers constructed sine table with great precision. They were used to calculate the positions of the planets as accurately as possible so had to be computed with high degrees of accuracy. Govindasvami considered the sexagesimal fractional parts of the twenty-four tabular sine differences from the Aryabhatiya. These lead to more correct sine values at intervals of 90 °/24 = 3 °45 '. In the commentary Govindasvami found certain other empirical rules relating to computations of sine differences in the argumental range of 60 to 90 degrees. Both of the references [1] and [2] are concerned with the sine tables in Govindasvami's work.
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