To quote Goursat:
Would somebody mind developing some intuition for this statement, along with an example or four (if not an intuitive proof), that would help motivate me to pick up classical books on analytical geometry & encourage me to wade through hundreds of pages to get to results like this one? I know so little about topics like these that I'm still trying to figure out the intuition for deriving multiple points, since it seems like authors do it in different ways each time, thanks.
Quote:
It is shown in treatises on Analytic Geometry that every unicursal curve of degree n has [itex]\frac{(n-1)(n-2)}{2}[/itex] double points, and, conversely, that every curve of degree n which has this number of double points is unicursal. P222 |
Would somebody mind developing some intuition for this statement, along with an example or four (if not an intuitive proof), that would help motivate me to pick up classical books on analytical geometry & encourage me to wade through hundreds of pages to get to results like this one? I know so little about topics like these that I'm still trying to figure out the intuition for deriving multiple points, since it seems like authors do it in different ways each time, thanks.
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