पृष्ठम्:सिद्दान्तदर्पणम्.djvu/२२

x According to some, Nilakantha has composed a work entitled Grahairaya. It is likely, however, that this is only the Grul44a - mirएaya, noticed above . UIloor attributes to Nilakantha a work called (Gauit८)yukt. Thus, speaking about a Bhasayuktiblds, he says that “it is not the work of Kelallur Comatiri , author of Garritayukti.”* The ascription is wrong and the fact is that while our author belonged to the Gargya-gotra, this latter work is by an anonymous author belonging to the Bharadvaja-gotra as is clear from its first verse, which runs as follows : It has been noticed that Nilakaptha's 487.Bhasya is later than his 727trasaigraha and Goldऽra which are quoted in the former. But nothing has been said about the chronology of his other works. The present writer's investigations have, however, shed some light on this matter विदित्वार्यभटप्रोक्तगोलतत्त्वेन केनचित् भारद्वाजेन तन्यन्ते काश्चित् गणितयुक्तयः ।। The first five works etnumerated above, wi८., Golastara, Siddhart4 darp010, Ca71dranchyagapita, the commentary thereon, and 747ara ऽaigrahu do not refer to any other work, but are, in their turn, quoted in other works of Nlakaptha. Of these, the 7artrasaigratha is the most comprehensive of the five and gives the date of its composition as 1500 A.D., i.e., it was written when the author was fify-seven. On the above considerations it may be presumed that the other four works were written before this date. The Grahap mair14ya and the Sundar4urja-prasi10ttara, of which manuscripts have yet to be discovered and which are quoted in the 23.Bhasya, have also to be ascribed to about this period. This Bhasy0, 1. Vatakkumkur, Hist. of Sxt. Lit. in Kerala, vol. I, p. 389 ; Uloor, Kerala Sahitya Caritrar, vol. II, p. 117 2. 4, Ulor, 1bid, p. 122. 3. Ms. : Madras, Mal. D. 339, pp. 83-89, 1ow, transferred to the Kerala. Univ. Or. Res. Inst. and Mss. Library, Trivandrum. Uloor, Kerala Sahitya Coritrarra, vol. II, p. 11