Chen Jingrun
Chen Jingrun ( Chinese 陳景潤 / 陈景润 , Pinyin Chén Jǐngrùn , W.-G. Ch'en Chingjun ; born May 22, 1933 in Fuzhou , Republic of China ; † March 19, 1996 ) was a Chinese mathematician who was known for his results in the analytical number theory is known. He is considered one of the leading Chinese mathematicians of the 20th century and one of the most influential mathematicians in China.
Life
Chen was the third son in a large family from Fuzhou . His father was a Post employee. From 1949 to 1953, Chen Jingrun studied at the mathematics department of Xiamen University and was then a school teacher at the 4th Middle School in Beijing, but was soon dismissed as unfit. After that, the university president, who heard about it, hired him as an employee at Xiamen University. During air alarms, he studied the book Additive Number Theory by Hua Luogeng , which resulted in some papers that he sent to Hua. He lectured about it at the annual meeting of Chinese mathematicians in 1956 and in 1957 became an assistant to Hua at the Academia Sinica . Chen was often ill and particularly suffered from the effects of the Cultural Revolution that began in 1966, which meant that research at his institute was stopped. After the Cultural Revolution, he became a research professor at the Academia Sinica in 1978, to which he was also elected in 1980. In 1984 he got Parkinson's .
Chen received the Chinese National First Class Science Prize, He Liang He Li Prize, and Hua Luogeng Mathematics Prize.
He was married in 1980 and has one son.
Act
Chen worked on the twin prime conjecture , Waring's problem (he proved g (5) = 37), Goldbach's conjecture, and Legendre's conjecture , thus further developing analytical number theory, and especially additive number theory.
Chen's theorem
Goldbach's conjecture says that every even number can be written as the sum of two prime numbers, and is still unproven today.
In 1966, Chen gave the best approximation to date of Goldbach's conjecture: he proved that every even number that is greater than a certain minimum limit can be written as the sum of a prime number and another number that has at most two prime factors .
Honors
- The asteroid (7681) Chenjingrun was named after him.
- In 1999, a commemorative stamp was issued in China with a silhouette of Chen and a formula from his sentence on Goldbach's conjecture
Fonts
- On the representation of a larger even integer as the sum of a prime and the product of at most two primes , Kexue Tongbao 17, 1966, pp. 385-386 (Chinese); Scientia Sinica 16, 1973, pp. 157-176 (English; Zentralblatt review ); Scientia Sinica 21, 1978, pp. 421-430 (English; Zentralblatt review )
literature
- Pan Chengtong , Wang Yuan : Chen Jingrun: a brief outline of his life and works ( Memento of August 29, 2008 in the Internet Archive ) , Acta Mathematica Sinica New Series 12, 1996, pp. 225-233 (English; online , PDF - File, 114 kB)
Web links
- Chen Jingrun ( Memento from October 22, 2007 in the Internet Archive ) on the website of the Chinese Institute of Mathematics, 2003 (Chinese)
- Article on the Chen prime number on Wikipedia
Footnotes
- ↑ About AMSS. History , Academy of Mathematics and Systems Science
- ↑ Chen: On the representation of a larger even integer as the sum of a prime and the product of at most two primes , 1966
- ^ Website of Manfred Börgens: Postage Stamp of the Month June 2001 . With guest commentary by Hartmut Siebert. Status: November 13, 2006
personal data | |
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SURNAME | Chen, Jingrun |
ALTERNATIVE NAMES | 陳景潤 (traditional Chinese); 陈景润 (simplified Chinese); Chén, Jǐngrùn (pinyin); Ch'en, Chingjun (Wade-Giles) |
BRIEF DESCRIPTION | Chinese mathematician |
DATE OF BIRTH | May 22, 1933 |
PLACE OF BIRTH | Fuzhou , China |
DATE OF DEATH | March 19, 1996 |