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Mathematics
P. Lawrence's user avatar
P. Lawrence's user avatar
P. Lawrence's user avatar
P. Lawrence
  • Member for 6 years, 4 months
  • Last seen more than a month ago
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B.Sc. honours mathematics, Carleton U., Ottawa 1965 M.A. mathematics York U., Toronto 1968 Ph.D. pure mathematics U. of Waterloo 1971 post-doc Universita di Catania 1971-72, U. of Toronto 1972-73 teaching: Pahlavi U., Shiraz,Iran assistant prof. 1973-1975 Champlain Regional College, Lennoxville, Quebec 1976-84 Ryerson U., Toronto 1984-2017 retired as full professor 2017

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5
Computing $ \int \frac{{\rm d} x}{x^3 + 12} $
May 17, 2023
4
tangent of a matrix
Jan 20, 2023
4
How to expand $(1+ \frac{1}{x})^n$?
Feb 15, 2023
4
Criterion for positive semi-definite quadratic function in terms of $2^n-1$ principal minors
Mar 5, 2020
4
What is wrong? $\epsilon$-$\delta$ proof that $\lim \limits_{x \to 1} \sqrt{x}=1$
Nov 10, 2022
4
Any $(x, y, z)$ can satisfy the $5x^2+2y^2+6z^2-6xy-2xz+2yz<0$?
May 9, 2020
4
How many solutions to this under-determined equation
Mar 19, 2020
4
Why does a determinant of $0$ mean the matrix isn't invertible?
May 22, 2020
3
Laplace expansion vs Cofactor expansion?
Feb 12, 2023
3
Is there a proof $e^ae^b=e^{a+b}$ using its power series expansion?
Feb 16, 2023