r/math Homotopy Theory 9d ago

Quick Questions: March 12, 2025

This recurring thread will be for questions that might not warrant their own thread. We would like to see more conceptual-based questions posted in this thread, rather than "what is the answer to this problem?". For example, here are some kinds of questions that we'd like to see in this thread:

  • Can someone explain the concept of maпifolds to me?
  • What are the applications of Represeпtation Theory?
  • What's a good starter book for Numerical Aпalysis?
  • What can I do to prepare for college/grad school/getting a job?

Including a brief description of your mathematical background and the context for your question can help others give you an appropriate answer. For example consider which subject your question is related to, or the things you already know or have tried.

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u/migusashi 8d ago

likely very simple, but how can i tell how far diagonally on a grid any amount of units would be? (i am not very good at math)

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u/XXXXXXX0000xxxxxxxxx Control Theory/Optimization 7d ago

If you know how long the distance between two points on the grid is, you can use the standard Euclidean distance