Page:Aryabhatiya of Aryabhata, English translation.djvu/41

Rh Brahmagupta (II, 467) remarks that according to Aryabhata all the planets were not at the first point of Meṣa at the beginning of the yuga. I do not know on what evidence this criticism is based.

Brahmagupta (XI, 8) remarks that according to the Arydstasata the nodes move while according to the Dasagitika the nodes (excepting that of the Moon) are fixed :

This refers to I, 2 and IV, 2. Aryabhata (I, 7) gives the location, at the time his work was composed, of the apsides and nodes of all the planets, and (I, 7 and IV, 2) implies a knowledge of their motion. But he gives figures only for the apsis and node of the Moon. This may be due to the fact that the numbers are so small that he thought them negligible for his purpose.

Brahmagupta (XI, 5) quotes stanza 1 of our text:

yugaravibhagaṇāḥ khyughriti yat proktam tat tayor yugaṁ spaśṭaṁ । triśatī ravyudāyānaṁ tadantaraṁ hetunā kena. ॥