Conformal equivalence
From Infogalactic: the planetary knowledge core
![](/w/images/thumb/3/32/Riemann_sphere1.svg/300px-Riemann_sphere1.svg.png)
Stereographic projection is a conformal equivalence between a portion of the sphere (with its standard metric) and the plane with the metric
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![\frac{4}{(1 + X^2 + Y^2)^2} \; ( dX^2 + dY^2)](/w/images/math/2/a/c/2ac74144e9ca183ae39a390f177bb9ed.png)
In mathematics and theoretical physics, two geometries are conformally equivalent if there exists a conformal transformation (an angle-preserving transformation) that maps one geometry to the other one.[1] More generally, two Riemannian metrics on a manifold M are conformally equivalent if one is obtained from the other by multiplication by a positive function on M.[2] Conformal equivalence is an equivalence relation on geometries or on Riemannian metrics.
See also
References
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