siddhânta m. established end, final end or aim or purpose (cf. sama-s○), (cf. rāddhânta), demonstrated conclusion of an argument (or the 4th member of a syllogism following on the refutation of the pūrva-pakṣa, q.v.), settled opinion or doctrine, dogma, axiom, received or admitted truth (of four kinds, See sarva-tantra-s○?, prati-tantra-s○, adhikaraṇa-s○, abhyupagama-s○) MBh. Kap. Sarvad. (cf. IW. 64)

• any fixed or established or canonical text-book or received scientific treatise on any subject (esp. on astronomy and mathematics

• often ifc., as the following 9, Brahma-sṭsubject, Sūrya-sṭsubject, Soma-sṭsubject, Bṛihaspati-sṭsubject, Garga-sṭsubject, Nārada-sṭsubject, Parāśara-sṭsubject, Pulastya-sṭsubject, Vasishṭha-sṭsubject

• or the following 5, Sid, dhântas, Pauliśa-sṭsubject, Romaka-sṭsubject, Vāsishṭha-sṭsubject, Śaura-sṭsubject, and Paitāmaha-sṭsubject) VarBṛS. Sarvad. IW. 175

• a partic. class of Buddhist and Jaina wks