Editing Halayudha

{{short description|10th-century Indian mathematician}}
{{Use dmy dates|date=March 2017}}
{{Use Indian English|date=March 2017}}
{{Infobox scholar
| name             = Halāyudha 
| fullname         =
| birth_date       = c. 10th century AD
| birth_place      =
| death_date       =
| death_place      =
| main_interests   = [[Sanskrit]] [[mathematician]]
| notable_ideas    =
| major_works      = ''Mṛtasañjīvanī'' and "Halāyudha trikoņa"
| influences       =
| influenced       =
}}

'''Halāyudha''' ([[Sanskrit]]: हलायुध) wrote the '''''{{IAST|Mṛtasañjīvanī}}''''', a [[close reading|commentary]] on [[Pingala]]'s ''Chandaḥśāstra'', was an Indian Mathematician and poet who lived and worked in the 10th century.<ref>Maurice Winternitz, ''History of Indian Literature'', Vol. III</ref> 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 [[metre (poetry)|metre]]s 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]].<ref>{{Cite book |title=Gaṇitānanda: Selected Works of Radha Charan Gupta on History of Mathematics |last=Ramasubramanian |first=K |date=2019-11-08 |publisher=Springer |year=2019 |isbn=9789811312298}}</ref><ref>{{Cite book |title=A Primer for Mathematics Competitions |last=Gavin Hitchcock |first=Alexander Zawaira |date=2008-10-31 |publisher=Oxford University |year=2008 |isbn=9780191561702}}</ref>

== Biography ==

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 dynasty|Paramara]] kingdom. There, he composed ''Mṛta-Sañjīvanī'' in honour of the Paramara king [[Vakpati Munja|Munja]].{{sfn|Ganga Prasad Yadava|1982|p=228}}

== Works ==

Halayudha composed the following works:{{sfn|Ganga Prasad Yadava|1982|p=228}}

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

==See also==
*[[Indian mathematicians]]

== References ==
{{reflist}}

=== Bibliography ===
History of Rashtrakutas

* {{cite book |author=Ganga Prasad Yadava |title=Dhanapāla and His Times: A Socio-cultural Study Based Upon His Works |url=https://books.google.com/books?id=aY_I3zgxfpsC&pg=PA32 |publisher=Concept |year=1982 |oclc=9760817 }}

{{Indian mathematics}}


{{authority control}}

[[Category:10th-century Indian mathematicians]]
[[Category:Indian Sanskrit scholars]]


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