Find a projective change of coordinates












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Find a projective change of coordinates that takes the projective completion of the circumference C: $x^2 + y^2 = 1$ to the projective completion of the parabola P: $y^2=2px$, $p geq 0$




(i.e. $x^2 + y^2 = z^2$ to $y^2=2pxz$)











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  • $begingroup$
    Essentially a duplicate of math.stackexchange.com/q/1273662/265466.
    $endgroup$
    – amd
    Jan 8 at 2:33










  • $begingroup$
    I don’t get the explanation there, it becomes the regular circumference, not its completion.
    $endgroup$
    – M. Navarro
    Jan 8 at 7:47
















1












$begingroup$


Find a projective change of coordinates that takes the projective completion of the circumference C: $x^2 + y^2 = 1$ to the projective completion of the parabola P: $y^2=2px$, $p geq 0$




(i.e. $x^2 + y^2 = z^2$ to $y^2=2pxz$)











share|cite|improve this question









$endgroup$












  • $begingroup$
    Essentially a duplicate of math.stackexchange.com/q/1273662/265466.
    $endgroup$
    – amd
    Jan 8 at 2:33










  • $begingroup$
    I don’t get the explanation there, it becomes the regular circumference, not its completion.
    $endgroup$
    – M. Navarro
    Jan 8 at 7:47














1












1








1





$begingroup$


Find a projective change of coordinates that takes the projective completion of the circumference C: $x^2 + y^2 = 1$ to the projective completion of the parabola P: $y^2=2px$, $p geq 0$




(i.e. $x^2 + y^2 = z^2$ to $y^2=2pxz$)











share|cite|improve this question









$endgroup$




Find a projective change of coordinates that takes the projective completion of the circumference C: $x^2 + y^2 = 1$ to the projective completion of the parabola P: $y^2=2px$, $p geq 0$




(i.e. $x^2 + y^2 = z^2$ to $y^2=2pxz$)








conic-sections coordinate-systems projective-geometry






share|cite|improve this question













share|cite|improve this question











share|cite|improve this question




share|cite|improve this question










asked Jan 7 at 18:53









M. NavarroM. Navarro

678




678












  • $begingroup$
    Essentially a duplicate of math.stackexchange.com/q/1273662/265466.
    $endgroup$
    – amd
    Jan 8 at 2:33










  • $begingroup$
    I don’t get the explanation there, it becomes the regular circumference, not its completion.
    $endgroup$
    – M. Navarro
    Jan 8 at 7:47


















  • $begingroup$
    Essentially a duplicate of math.stackexchange.com/q/1273662/265466.
    $endgroup$
    – amd
    Jan 8 at 2:33










  • $begingroup$
    I don’t get the explanation there, it becomes the regular circumference, not its completion.
    $endgroup$
    – M. Navarro
    Jan 8 at 7:47
















$begingroup$
Essentially a duplicate of math.stackexchange.com/q/1273662/265466.
$endgroup$
– amd
Jan 8 at 2:33




$begingroup$
Essentially a duplicate of math.stackexchange.com/q/1273662/265466.
$endgroup$
– amd
Jan 8 at 2:33












$begingroup$
I don’t get the explanation there, it becomes the regular circumference, not its completion.
$endgroup$
– M. Navarro
Jan 8 at 7:47




$begingroup$
I don’t get the explanation there, it becomes the regular circumference, not its completion.
$endgroup$
– M. Navarro
Jan 8 at 7:47










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