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Q58Section II (Mathematics)58 of 145

The unit cylinder is locally isometric to the plane: E=G=1E=G=1, F=0F=0

The right cylinder over the circle x2+y2=1x^2+y^2=1 has the parametrization xˉ:U→R3\bar x:U\to\mathbb{R}^3, where U={(u,v)∈R2:0<u<2π,−∞<v<∞}U=\{(u,v)\in\mathbb{R}^2:0<u<2\pi, -\infty<v<\infty\}, xˉ(u,v)=(cos⁡u,sin⁡u,v)\bar x(u,v)=(\cos u,\sin u,v). Then the coefficients E, F, G in the first fundamental form of the cylinder are given by:

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