Peter Borwein

Peter Benjamin Borwein (an haife shi a St. Andrews, Scotland, 10 ga Mayu, 1953 - 23 ga Agusta 2020) masanin lissafi ne na Kanada kuma farfesa a Jami'ar Simon Fraser . An san shi a matsayin marubucin takarda wanda ya gabatar da algorithm na Bailey-Borwein-Plouffe (wanda Simon Plouffe ya gano) don lissafin π.

 Sha'awar farko a lissafi 
An haifi Borwein a cikin iyalin Yahudawa. Ya zama mai sha'awar ka'idar lambobi da nazarin gargajiya a lokacin shekara ta biyu a jami'a. Ba shi da sha'awar lissafi a baya, kodayake mahaifinsa shine shugaban sashen lissafi na Jami'ar Yammacin Ontario kuma mahaifiyarsa ita ce mataimakiyar likita a can. Borwein da 'yan uwansa biyu sun fi girma a lissafi.

 Ayyukan ilimi 
Bayan kammala karatun digiri na farko a fannin girmamawa a Jami'ar Western Ontario a shekara ta 1974, ya ci gaba da kammala MSc da Ph.D. a Jami'an British Columbia. Ya shiga Sashen Lissafi a Jami'ar Dalhousie . Yayinda yake can, shi, ɗan'uwansa Jonathan Borwein da David H. Bailey na NASA sun rubuta takarda ta 1989  wanda ya tsara kuma ya shahara da hujja don lissafin lambobi biliyan ɗaya na π. Marubutan sun lashe Kyautar Chauvenet ta 1993 da Kyautar Merten M. Hasse don wannan takarda.

A shekara ta 1993, ya koma Jami'ar Simon Fraser, ya haɗu da ɗan'uwansa Jonathan wajen kafa Cibiyar Nazarin Gwaje-gwaje da Lissafi (CECM) inda ya haɓaka Inverse Symbolic Calculator.

 Bincike 
A cikin 1995, Borweins sun haɗa kai da Yasumasa Kanada na Jami'ar Tokyo don lissafin π zuwa fiye da lambobi biliyan huɗu.

Borwein ya haɓaka wani algorithm wanda ke amfani da Polynomials na Chebyshev ga aikin Dirichlet eta don samar da jerin saurin haɗuwa da suka dace da ƙididdigar ƙididdiga, wanda ya buga a lokacin bayar da digiri na girmamawa ga ɗan'uwansa, Jonathan . 

Peter Borwein ya kuma yi aiki tare da David Bailey na NASA da Simon Plouffe na Jami'ar Quebec don lissafin lambobi na hexadecimal na π. Wannan ya ba da hanya ga masu lissafi don ƙayyade lambar nth na π ba tare da lissafin lambobi da suka gabata ba. A cikin 2007 tare da Tamás Erdélyi, Ronald Ferguson, da Richard Lockhart ya warware matsalar Littlewood ta 22.[1]

 Haɗin kai 
Tsohon farfesa a Jami'ar Simon Fraser, Peter Borwein yana da alaƙa da Binciken Interdisciplinary a cikin Kimiyya da Lissafi (IRMACS), Cibiyar Nazarin Gwaje-gwaje da Gine-gine (CECM), Lissafi na Fasahar Bayanai da Tsarin Ruwa (MITACS), da Cibiyar Nazari ta Pacific (PIMS).

 Rayuwa da mutuwarsa 
An gano Borwein da cutar sclerosis mai yawa kafin shekara ta 2000. Ya mutu a ranar 23 ga watan Agusta 2020 daga cutar huhu sakamakon MS.

 Manazarta 

Rukuni:Mutattun 2020
Rukuni:Haifaffun 1953
Rukuni:Shafuka masu fassarorin da ba'a duba ba