Berezin transform

In mathematics — specifically, in complex analysis — the Berezin transform is an integral operator acting on functions defined on the open unit disk D of the complex plane C. Formally, for a function ƒ : D → C, the Berezin transform of ƒ is a new function Bƒ : D → C defined at a point z ∈ D by

$(Bf)(z)=\underset{D}{\int }\frac{(1-|z{|}^2{)}^2}{|1-z\overline{w}{|}^4}f(w)\mathrm{d}A(w),$

where w denotes the complex conjugate of w and $\mathrm{d}A$ is the area measure. It is named after Felix Alexandrovich Berezin.

References

• Hedenmalm (2000). Theory of Bergman spaces. Graduate Texts in Mathematics. 199. New York: Springer-Verlag. pp. 28–51. ISBN 0-387-98791-6. 

External links

• Weisstein, Eric W.. "Berezin transform". http://mathworld.wolfram.com/BerezinTransform.html.