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doc#129 | of the given line . Thus pencils |
doc#129 | intersecting in a line l, tangent |
doc#129 | of as a line in a particular |
doc#129 | and hence every line of <formul> in |
doc#129 | obviously meets every line of <formul> in |
doc#129 | Clearly, any line , l, |
doc#129 | T. A line through two of |
doc#129 | image of any line of <formul>, |
doc#129 | , meets any line of <formul> in |
doc#129 | obviously meets any line <formul> in a |
doc#129 | that there exist line involutions of all |
doc#129 | show that every line which meets g |
doc#129 | by a general line , l, |
doc#129 | which implies a line of the pencil |
doc#129 | finally that every line through a point |
doc#129 | have a multiple line of multiplicity either |
doc#129 | there be a line through P which |
doc#129 | there be a line through P which |
doc#129 | secant and the line joining the vertex |
doc#129 | consider an arbitrary line , l, |