Lines of curvature of circular parabola












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Given the circular parabola $x(θ,ϕ)=(θcos(ϕ),θsin(ϕ),θ^2)$, how would I show that the curvature lines are the parallels (circles) and the meridians (parabolas)?










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  • $begingroup$
    Use the symmetry?
    $endgroup$
    – random
    Dec 4 '18 at 0:43
















0












$begingroup$


Given the circular parabola $x(θ,ϕ)=(θcos(ϕ),θsin(ϕ),θ^2)$, how would I show that the curvature lines are the parallels (circles) and the meridians (parabolas)?










share|cite|improve this question









$endgroup$












  • $begingroup$
    Use the symmetry?
    $endgroup$
    – random
    Dec 4 '18 at 0:43














0












0








0





$begingroup$


Given the circular parabola $x(θ,ϕ)=(θcos(ϕ),θsin(ϕ),θ^2)$, how would I show that the curvature lines are the parallels (circles) and the meridians (parabolas)?










share|cite|improve this question









$endgroup$




Given the circular parabola $x(θ,ϕ)=(θcos(ϕ),θsin(ϕ),θ^2)$, how would I show that the curvature lines are the parallels (circles) and the meridians (parabolas)?







differential-geometry






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share|cite|improve this question











share|cite|improve this question




share|cite|improve this question










asked Dec 4 '18 at 0:23









JimJim

1




1












  • $begingroup$
    Use the symmetry?
    $endgroup$
    – random
    Dec 4 '18 at 0:43


















  • $begingroup$
    Use the symmetry?
    $endgroup$
    – random
    Dec 4 '18 at 0:43
















$begingroup$
Use the symmetry?
$endgroup$
– random
Dec 4 '18 at 0:43




$begingroup$
Use the symmetry?
$endgroup$
– random
Dec 4 '18 at 0:43










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