5 Planes Through Each Line
An important step towards the proof of the Cayley-Salmon result about the 27 lines
is this:
Through every line of the surface, there are 5 tritangent planes.
There is an algorithm which allows one to compute the equations of these three planes from
the given line.
What this means is that each line is incident with (i.e., intersects) exactly 10 other lines.
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On 4 Jun 2017, 11:23.