Διαφορά μεταξύ των αναθεωρήσεων του «Βιρασένα»

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'''Virasena''' was an 8th century [[Indian mathematics|mathematician]] in [[India]] who gave the derivation of the [[volume]] of a [[frustum]] by a sort of infinite procedure. He worked with the concept of ''ardhaccheda'': the number of times a number could be divided by 2; effectively logarithms to base 2. He also worked with logarithms in base 3 (trakacheda) and base 4 (caturthacheda).<ref>{{citation| contribution=History of Mathematics in India|title=Students' Britannica India: Select essays|editor-first1=Dale|editor-last1=Hoiberg|editor-first2=Indu|editor-last2=Ramchandani|first=R. C.|last=Gupta|page=329|publisher=Popular Prakashan|date=2000| contribution-url=http://books.google.co.uk/books?id=-xzljvnQ1vAC&pg=PA329&lpg=PA329&dq=Virasena+logarithm&source=bl&ots=BeVpLXxdRS&sig=_h6VUF3QzNxCocVgpilvefyvxlo&hl=en&ei=W0xUTLyPD4n-4AatvaGnBQ&sa=X&oi=book_result&ct=result&resnum=2&ved=0CBgQ6AEwATgK#v=onepage&q=Virasena%20logarithm&f=false}}</ref>
 
He was also the first person to give a value of [[pi]] more accurate than provided by any of his predecessors by means of constructing a [[monotonic function|monotonically decreasing]] sequence approaching pi as a [[limit (mathematics)|limit]].<ref>{{citation}}{{Citation
| last = Mishra
| first = V.
| author-link =
| last2 = Singh
| first2 = S. L.
| author2-link =
| title = First Degree Indeterminate Analysis in Ancient India and its Application by Virasena
| journal = Indian Journal of History of Science
| volume = 32
| issue = 2
| pages = 127-133
| date = February 1997
| origyear = 1995
| year = 1997
| month = November}}</ref>
 
 
==References==
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