Peter Wynn (19312017) was an English mathematician. His main achievements concern
approximation theory
In mathematics, approximation theory is concerned with how function (mathematics), functions can best be approximation, approximated with simpler functions, and with quantitative property, quantitatively characterization (mathematics), characteri ...
– in particular the theory of
Padé approximant
In mathematics, a Padé approximant is the "best" approximation of a function near a specific point by a rational function of given order. Under this technique, the approximant's power series agrees with the power series of the function it is ap ...
s – and its application in
numerical methods
Numerical analysis is the study of algorithms that use numerical approximation (as opposed to symbolic manipulations) for the problems of mathematical analysis (as distinguished from discrete mathematics). It is the study of numerical methods th ...
for improving the
rate of convergence
In numerical analysis, the order of convergence and the rate of convergence of a convergent sequence are quantities that represent how quickly the sequence approaches its limit. A sequence (x_n) that converges to x^* is said to have ''order of c ...
of
sequence
In mathematics, a sequence is an enumerated collection of objects in which repetitions are allowed and order matters. Like a set, it contains members (also called ''elements'', or ''terms''). The number of elements (possibly infinite) is calle ...
s of
real number
In mathematics, a real number is a number that can be used to measure a ''continuous'' one-dimensional quantity such as a distance, duration or temperature. Here, ''continuous'' means that values can have arbitrarily small variations. Every real ...
s.
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MathSciNet entries
Reference Book
* C. Brezinski and
M. Redivo-Zaglia: "The genesis and early developments of Aitken’s process, Shanks' transformation, the epsilon algorithm, and related fixed point methods", Numer. Algorithms, vol.80 (2019) pp.11-133.
* C. Brezinski: "Reminiscences of Peter Wynn", Numer. Algorithms, vol.80 (2019) pp.5–11.
* C. Brezinski and
M. Redivo-Zaglia: ”Extrapolation and rational interpolation, the works of the main contributors”, Springer, 2020.
External links
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{{DEFAULTSORT:Wynn, Peter
1932 births
2017 deaths
People from Hertford
20th-century German mathematicians
Johannes Gutenberg University Mainz alumni
The Legacy of Peter Wynn Peter Wynn Claude Brezinski, Michela Redivo-Zaglia: "Extrapolation and Rational Approximation: The Works of the Main Contributors", Springer Nature, Cham, Switzerland(2020).