Post without words #2

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10 Responses to Post without words #2

  1. I’ll add some words: it’s impossible to make the one with four colours symmetric.

  2. Guest says:

    …in a plane? Looks like power sets and hypercubes, so the n-th one can be projected symmetrically into (n-1)-space.

  3. JM says:

    It’s interesting that some people looked at this and saw cubes in various dimensions. My first impression was a tree with each branch asking, “Which color should I eliminate?”

  4. Brent says:

    Great observations so far! Anyone, please feel free to add more observations, no matter how small.

  5. xander says:

    1 (omitted—it would be an empty box, I suppose)
    1 1
    1 2 1
    1 3 3 1
    1 4 6 4 1

    Combinations and binomial coefficients spring to mind.

  6. Pingback: Some words about Post without words #2 | The Math Less Traveled

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