Halayudha

Halāyudha (Sanskrit: हलायुध) wrote the Mṛtasañjīvanī, a commentary on Pingala's Chandaḥśāstra, was an Indian Mathematician and poet who lived and worked in the 10th century.^[1] The Chandaḥśāstra by the Indian lyricist Piṅgala (3rd or 2nd century BC) somewhat crypically describes a method of arranging two types of syllables to form metres of various lengths and counting them; as interpreted and elaborated by Halāyudha his "method of pyramidal expansion" (meru-prastāra) for counting metres is equivalent to Pascal's triangle.^{[2] [3]}

Halayudha originally resided at the Rashtrakuta capital Manyakheta, where he wrote under the patronage of emperor Krishna III. His Kavi-Rahasya eulogizes Krishna III. Later, he migrated to Ujjain in the Paramara kingdom. There, he composed Mṛta-Sañjīvanī in honour of the Paramara king Munja.^[4]

Halayudha composed the following works:^[4]

• Kavi-Rahasya, a book on poetics
• Mṛta-Sañjīvanī, a commentary on Pingala's Chandaḥ-śāstra
• Abhidhana-ratna-mala, a lexicon
• Halāyudha Kośa, a dictionary

• Indian mathematicians

History of Rashtrakutas

• Ganga Prasad Yadava (1982). Dhanapāla and His Times: A Socio-cultural Study Based Upon His Works. Concept. OCLC 9760817.

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