• Doctor xNo@r.nf
      link
      fedilink
      English
      arrow-up
      1
      arrow-down
      3
      ·
      11 months ago

      I suggest you Google “Projectively Extended Real Numbers”.

      • FooBarrington@lemmy.world
        link
        fedilink
        arrow-up
        3
        ·
        11 months ago

        You mean this one?

        The projectively extended real number line is distinct from the affinely extended real number line, in which +∞ and −∞ are distinct.

        Now tell me, do we usually work with the projectively extended real numbers?