The Cross Ratio

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  • Опубликовано: 8 фев 2025
  • Here we define the cross ratio of four extended-complex numbers (typical a+ib and infinity). We use it to answer the question "how many extended-complex numbers determine a Möbius Transformation?"

Комментарии • 5

  • @MrSlugmuffin
    @MrSlugmuffin Месяц назад

    Do complex integrals and the residue theorem please

  • @ayzikdig1983
    @ayzikdig1983 2 года назад

    do you remember your masters program?

    • @DrMcCrady
      @DrMcCrady  2 года назад +1

      Sure, I did the masters program at Mizzou and passed the qualifying exams for the PhD program along the way. There were some standard courses in measure theory, complex analysis, differential geometry and topology, and algebra that all the masters students had to take, but you could also take the more specialized “topics” classes with the PhD folks as electives. What’s yours like?

    • @ayzikdig1983
      @ayzikdig1983 2 года назад

      @@DrMcCrady not there yet
      just asking around
      from your current vantge point
      you feel like standard courses benffited your research or the specialized “topics” did more for you?

    • @DrMcCrady
      @DrMcCrady  2 года назад +1

      Oh the topics ones for sure. I haven’t thought about measure theory since that class lol. The topics classes aligned more with my interests (algebra and algebraic geometry). But the other classes outside of my area were still really useful getting reps practicing making coherent proofs, getting a little bit of perspective on the history of subjects and how they overlap, etc.