What is a projective range?
$begingroup$
Wikipedia says a projective range is the dual of a pencil of lines on a point. Surely that means: all points on a line.
But Wikipedia also says a projective range may be a projective line or a conic.
This definition and this property seem to be at odds.
projective-geometry
asked Dec 12 '18 at 8:24
pdmcleanpdmclean
305214
$endgroup$
add a comment |
$begingroup$
Wikipedia says a projective range is the dual of a pencil of lines on a point. Surely that means: all points on a line.
But Wikipedia also says a projective range may be a projective line or a conic.
This definition and this property seem to be at odds.
projective-geometry
asked Dec 12 '18 at 8:24
pdmcleanpdmclean
305214
$endgroup$
add a comment |
$begingroup$
Wikipedia says a projective range is the dual of a pencil of lines on a point. Surely that means: all points on a line.
But Wikipedia also says a projective range may be a projective line or a conic.
This definition and this property seem to be at odds.
projective-geometry
asked Dec 12 '18 at 8:24
pdmcleanpdmclean
305214
$endgroup$
Wikipedia says a projective range is the dual of a pencil of lines on a point. Surely that means: all points on a line.
But Wikipedia also says a projective range may be a projective line or a conic.
This definition and this property seem to be at odds.
projective-geometry
projective-geometry
asked Dec 12 '18 at 8:24
pdmcleanpdmclean
305214
asked Dec 12 '18 at 8:24
pdmcleanpdmclean
305214
asked Dec 12 '18 at 8:24
pdmcleanpdmclean
305214
asked Dec 12 '18 at 8:24
pdmcleanpdmclean
305214
asked Dec 12 '18 at 8:24
pdmcleanpdmclean
305214
305214
add a comment |
add a comment |
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