Katantra
The Katantra (Sanskrit: कातन्त्र; IAST: K"ātantra") is a treatise on Sanskrit grammar (Vyakarana) attributed to Sharvavarman living at the time of the Satavahana dynasty. It is a simplified and abridged version of Pāṇini's Aṣṭādhyāyī and divided into the chapters "Sandhi", "Nāmni Catuṣṭaya" and "Ākhyāta". The terms "Kālāpa", "Kālāpaka" and "Kālāpa-vyākaraṇasūtra" refer to either the Katantra or a different version of it. Arthur Coke Burnell compared the arrangement of the Katantra to those of the Aindra school and the Tolkāppiyam.