Difference between revisions of "Covering domain"
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''domain over $\mathbf{C}^n$'' | ''domain over $\mathbf{C}^n$'' | ||
| − | A pair $(X,\pi)$, where $X$ is an arcwise-connected Hausdorff space and $\pi$ is a [[local homeomorphism]], called a projection. Covering domains are encountered in the [[analytic continuation]] of holomorphic functions. For every analytic (possibly multivalent) function $f$ in a domain $D \subset \mathbf{C}^n$ there is a corresponding covering domain $\tilde D$ with a projection $\pi : \tilde D \rightarrow D$, just as for every analytic function of one complex variable there is a corresponding [[Riemann surface]]; the function $f$ is single-valued on $\tilde D$. Covering domains are also called Riemann domains. | + | A pair $(X,\pi)$, where $X$ is an [[Arcwise connected space|arcwise-connected]] Hausdorff space and $\pi$ is a [[local homeomorphism]], called a projection. Covering domains are encountered in the [[analytic continuation]] of holomorphic functions. For every analytic (possibly multivalent) function $f$ in a domain $D \subset \mathbf{C}^n$ there is a corresponding covering domain $\tilde D$ with a projection $\pi : \tilde D \rightarrow D$, just as for every analytic function of one complex variable there is a corresponding [[Riemann surface]]; the function $f$ is single-valued on $\tilde D$. Covering domains are also called Riemann domains. |
====References==== | ====References==== | ||
Latest revision as of 17:02, 13 June 2020
domain over $\mathbf{C}^n$
A pair $(X,\pi)$, where $X$ is an arcwise-connected Hausdorff space and $\pi$ is a local homeomorphism, called a projection. Covering domains are encountered in the analytic continuation of holomorphic functions. For every analytic (possibly multivalent) function $f$ in a domain $D \subset \mathbf{C}^n$ there is a corresponding covering domain $\tilde D$ with a projection $\pi : \tilde D \rightarrow D$, just as for every analytic function of one complex variable there is a corresponding Riemann surface; the function $f$ is single-valued on $\tilde D$. Covering domains are also called Riemann domains.
References
| [1] | B.V. Shabat, "Introduction of complex analysis" , 2 , Moscow (1976) (In Russian) |
Comments
A covering domain is sometimes called a manifold spread over $\mathbf{C}^n$. See also Domain of holomorphy; Riemannian domain; Holomorphic envelope.
References
| [a1] | R.C. Gunning, H. Rossi, "Analytic functions of several complex variables" , Prentice-Hall (1965) pp. Chapt. 1, Section G |
| [a2] | H. Grauert, R. Remmert, "Theory of Stein spaces" , Springer (1979) (Translated from German) |
Covering domain. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Covering_domain&oldid=39695