Meep's Math Matters 14: Infinity is NOT a number 2: the rationals

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Uploaded by on May 20, 2009

Showing how the rational numbers are a countably infinite set. Using a geometric interpretation of the rationals.

I can be contacted at marypat.campbell@gmail.com

Spread the math love!

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  • @tekn04life

    When you are trying to say something about how many elements are in a set (which is what I'm doing here), it's essentially set theory.

    That said, it's not as if all mathematical areas are clearly defined with no overlap -- of course, there's =lots= of overlap. Once a person gets into uncountable infinity, you start getting into real analysis.

    I think it's more helpful to think of math as a whole, and not as a bunch of disconnected bits. Don't get hung up on the name.

  • this is so good! everyone's brain works differently but it finally clicked after watching your first 2 videos. can't wait to see the rest of them! is this set theory or number theory or what?

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