पृष्ठम्:आर्यभटीयम्.djvu/49

INTRODUCTION xlix Earlier, in the same context, Yallaya takes the Kali year 4581 (-A.D. 1480), to demonstrate the calculations involved in computing f 2 the planets. This would mean that he wrote the work about this date. 2. His works Yailaya is the author of at least five more works on mathematics and astronomy. They are : (1) Ganita-sangraha, a treatise on arithmetic, (2) Jyotisadarpana,' on astronomy, (3) Kalpavalli, a commentary on Suryasiddhanta' and (4) Kalpalata." an extensive commentary on the Laghumanasa of Muñjala whom Yallaya uniformly calls by his alternative name Mañjula. (5) A commentary in Telugu of the Suryasiddhanta by Yallaya has also been recorded." 3. Nature of the Supplementation Yallaya's supplementation leaves out the Gitika-pada and covers only the Gaņita, Kālakriyā and Gola sections of the Aryabhatiya and LSLMSGSGS G L LSLL L L S LS LS LSS 1. cf. : 327 3f(TDTTEIT: 4581 (Com. on A, iii. 6). 2. For more details on Yalaya, see Pt. I, Introduction, pp. xl-xliv. 3. Ms. No. 2879, Catalogue of Sanskrit Mss. in Mysore and 1884), p. 318. 4. Ms. Nos, 661, Reports on Skt. Mss. in Southern India, by E Hultzsch, (Pt. I, Madras, 1895) ; No. 3465, A Catal. of Skt. Mss. in the Panjab Univ. Library, Lahore, (Vol. II, Lahore, 1941). 5. Ms. No. 6284, A Cata. of Skt. and Pkt. Mss. in the Library of the India Office, Vol. II, by A. B. Keith, (London, 1935); R. 1708, A Triennial Cata. of Mss., (Govt. Or. Mss. Lib , Madras, Vol. II, Pt. i. Sanskrit C); 11662, 11663, A Des. Cata. of the Skt. Mss. in the Tanjore Maharaja Serfoji’s Sarasvati Mahal Library, (Vol. XVI, Tanjore, 1933) ; 673, Report on Skt. Mss. by Hultzsch, (ibid.); 336, Cata. of Skt. Mss. in Mysore and Coorg, by Lewis Rice, (ibid., p. 36). 6. Ms. D. 13475, A Des. Cata. of the Skt. Mss. in the Govt. Or. Mss. Library, Madras, (Vol. ΧΧΙV, Madras, 1918); R. 7705, A Triennial Cata. of Mss. Sanskrit, ibid., (Vol. XI, Madras, 1958). 7. For a Ms., see No. 6285, India Office, ibid. A Bh S. vii