सिद्धान्तशिरोमणि: गणिताध्याय (भास्कराचार्य - ग्रहगणित, मध्यमाधिकार व स्पष्टाधिकार सटीक)

ओं श्रीमहागणपतये नमः, श्रीगुरुभ्यो नमः सिद्धान्तशिरोमणौ गणिताध्याये मध्याधिकारे कालमानाध्यायः Verse 1. May the Sun at once give expression to our tongue in meaning ful words-that Sun, who rises to protect this world, whose duty it is to expel darkness, who is reported to be the Spouse of the lotus-creeper, who purges out the sins of all those that supplicate him, and on whose rising take place Vedic sacrifices and thereby the gods in heaven headed by Indra get feasted. Commentary (Comm.). Needs no Commentary. Verse 2. Excels that blessed Brahmagupta, the son of Jishnu, who is hailed as the crest-jewel of Mathemati- cians ; excel also those like Varāhamihira who were the authors of well known works, who were adepts in reason- ing, and u age of beautiful expression and on a study of whose works, one like me even of lesser intellect, will be able to produce monumental works. Comm. Needless to comment. However, we may state one thing. Bhaskara’s quoting the name of Brahma- gupta at the very outset, and that too with reverence, informs us that he is going to accept the Āgama of Brahmagupta in preference to that of others like Arya- bhata. This means that he is going to adopt the number of revolutions of planets in a Yuga and such other astro- nomical constants as were adopted by Brahmagupta. This point will be clarified later. Verse 3 This blessed author Bhaskara is now writing the work named Siddhānta-Siromani, the crest-jewel of all astronomical works, for the pleasure of good minded astronomers, after having bowed to the lotus-feet of his