Le mercredi 24 août 2022 à 03:14:22 UTC+2, Kwankyu Lee a écrit : > It is embarrassing that an idea of attaching ".length()" method to a line > segment graphics object leads to SageManifolds. We don't need vectors and > inner products to compute the length of a line segment.
I agree that it sounds daunting to speak about pseudo-Riemannian manifolds for just computing the length of a line segment, but note that, by working at the EuclideanSpace level, the end user does not need to know anything about the underlying manifold machinery. See for instance this tutorial: https://doc.sagemath.org/html/en/thematic_tutorials/vector_calculus.html The only complication would be to add the extra line sage: E = EuclideanSpace(3) at the beginning of the code For instance, your example at the start of this thread would become sage: E = EuclideanSpace(3) sage: l = E.line([(1,2,3),(2,2,3)]) # not implemented yet sage: l.length() 1 Eric. -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-devel/e8e1cb6a-2fca-4947-afbf-3ed7a1220396n%40googlegroups.com.
