# Mathematician:Paul Moritz Cohn

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## Mathematician

German-born mathematician renowned as an expert in abstract algebra, in particular non-commutative rings.

## Nationality

German-born British

## History

- Born: 8 Jan 1924, Hamburg, Germany
- 1939: Emigrated to Britain
- 1948: B.A. from Cambridge University
- 1951: Ph.D. from Cambridge University, supervised by Philip Hall
- 1951: Chargé de Recherches at the University of Nancy
- 1952: Lecturer in mathematics at Manchester University
- 1961-62: Visiting professor at Yale University
- 1962: At the University of California at Berkeley
- 1962: Reader at Queen Mary College
- 1964: Visiting professor at the University of Chicago
- 1967: Visiting professor at the State University of New York at Stony Brook
- 1967: Became head of the Department of Mathematics at Bedford College, London
- 1972: Awarded the Lester R Ford Award from the Mathematical Association of America
- 1974: Awarded the Senior Berwick Prize of the London Mathematical Society
- 1984: Moved to University College London (UCL)
- 1986: Became Astor Professor of Mathematics at UCL
- 1986: Visiting professor to the University of Alberta
- 1987: Visiting professor to Bar Ilan University
- 1989: Retired, but remained active
- Died: 20 April 2006 in London, England

## Publications

- 1957:
*Lie Groups*

- 1958:
*Rings of zero-divisors*(*Proc. Amer. Math. Soc.***Vol. 9**,*no. 6*: pp. 909 – 914)

- 1958:
*Linear Equations*

- 1961:
*Solid Geometry*

- 1963:
*Noncommutative unique factorization domains*(*Trans. Amer. Math. Soc.***Vol. 109**,*no. 2*: pp. 313 – 331) www.jstor.org/stable/1993910

- 1963:
*Rings with a weak algorithm*(*Trans. Amer. Math. Soc.***Vol. 109**,*no. 2*: pp. 332 – 356) www.jstor.org/stable/1993911

- 1965:
*Universal Algebra*(2nd edition: 1981)

- 1971:
*Free Rings and Their Relations*(2nd edition: 1985)

- 1974:
*Algebra, Volume 1*

- 1977:
*Algebra, Volume 2*

- 1977:
*Skew Field Constructions*

- 1990:
*Algebra Volume 3*

- 1991:
*Algebraic Numbers and Algebraic Functions*

- 1994:
*Elements of Linear Algebra*

- 2000:
*From Hermite rings to Sylvester domains*(*Proc. Amer. Math. Soc.***Vol. 128**,*no. 7*: pp. 1899 – 1904) www.jstor.org/stable/119680

- 1995:
*Skew Fields*

- 2000:
*Introduction to Ring Theory*

- 2000:
*Classic Algebra*

- 2003:
*Basic Algebra: Groups, Rings and Fields*($1$st volume of a new and revised edition of*Algebra*)

- 2003:
*Further Algebra and Applications*

- 2006:
*Free Ideal Rings and Localization in General Rings*