[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [Jyotihshastra: Astral and Mathematical Literature](https://indike.org/pramana/ins.science.pingree-1981) › c4.s5.12 # Jyotihshastra: Astral and Mathematical Literature c4.s5.12 Jyotiḥśāstra: Astral and Mathematical Literature c4.s5.12 - **Language:** English ### [c4.s5.12](https://indike.org/pramana/ins.science.pingree-1981.c4.s5.12) The planetary vākyas are given in an anonymous text entitled Vākyakaraṇa,²⁴² in which the epoch of the lunar vākyas is 22 May 1282; the text seems to have been composed in about 1300, probably near Kāñcī. There is a commentary composed by Sundararāja, who was a native of Viprasadgrāma (Aṇḍaṇa-nal-lur near Trichinopoly), in the late fifteenth or early sixteenth century; Sundararāja studied under Padmagarbha during the reign of (Gopendra) Tipparāja,²⁴³ who ruled Koṇḍavīḍu in the Guntur District for the Vijayanagara king, Kṛṣṇadeva Rāya, from about 1515 till 1520, and he corresponded with the well-known astronomer, Gārgyakerala Nīlakaṇṭha Somayājin, whom we shall presently discuss in more detail. - [Previous: c4.s5.11](https://indike.org/pramana/ins.science.pingree-1981.c4.s5.11) - [Next: c4.s5.13](https://indike.org/pramana/ins.science.pingree-1981.c4.s5.13) - [Up: c4.s5](https://indike.org/pramana/ins.science.pingree-1981.c4.s5) ## Linked texts (1) - [Vākyakaraṇa](https://indike.org/pramana/in.astro.kerala.sphuta.vakyakarana) — Sanskrit --- Source: [https://indike.org/pramana/ins.science.pingree-1981.c4.s5.12](https://indike.org/pramana/ins.science.pingree-1981.c4.s5.12) · Pramāṇa