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CIRCLE WITH A DOT

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  • tonwood@mathstodon.xyzT tonwood@mathstodon.xyz

    @johncarlosbaez Maybe I'm trying not to tell you something.

    johncarlosbaez@mathstodon.xyzJ This user is from outside of this forum
    johncarlosbaez@mathstodon.xyzJ This user is from outside of this forum
    johncarlosbaez@mathstodon.xyz
    wrote last edited by
    #4

    @tonwood - In that case you would have succeeded.

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    • tonwood@mathstodon.xyzT tonwood@mathstodon.xyz
      This post did not contain any content.
      tonwood@mathstodon.xyzT This user is from outside of this forum
      tonwood@mathstodon.xyzT This user is from outside of this forum
      tonwood@mathstodon.xyz
      wrote last edited by
      #5

      Of the 924 ways to choose six segments out of twelve, these 306 are connected.

      lisyarus@mastodon.gamedev.placeL 1 Reply Last reply
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      • tonwood@mathstodon.xyzT tonwood@mathstodon.xyz

        Of the 924 ways to choose six segments out of twelve, these 306 are connected.

        lisyarus@mastodon.gamedev.placeL This user is from outside of this forum
        lisyarus@mastodon.gamedev.placeL This user is from outside of this forum
        lisyarus@mastodon.gamedev.place
        wrote last edited by
        #6

        @tonwood That right here is an alphabet!

        tonwood@mathstodon.xyzT 1 Reply Last reply
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        • tonwood@mathstodon.xyzT tonwood@mathstodon.xyz
          This post did not contain any content.
          gregegansf@mathstodon.xyzG This user is from outside of this forum
          gregegansf@mathstodon.xyzG This user is from outside of this forum
          gregegansf@mathstodon.xyz
          wrote last edited by
          #7

          @tonwood

          This is very cool!

          Here are representatives of the 45 orbits of these figures under the group D_4 (the eight rotations and reflections that are isometries of a square), so no pair of these 45 figures are rotations/reflections of each other.

          Link Preview Image
          svengeier@mathstodon.xyzS 1 Reply Last reply
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          • lisyarus@mastodon.gamedev.placeL lisyarus@mastodon.gamedev.place

            @tonwood That right here is an alphabet!

            tonwood@mathstodon.xyzT This user is from outside of this forum
            tonwood@mathstodon.xyzT This user is from outside of this forum
            tonwood@mathstodon.xyz
            wrote last edited by
            #8

            @lisyarus Or rather a syllabary.

            My motive in listing these figures was to design a script made from a limited repertoire of elements, without the sameness of Tengwar. And syllabaries are under-represented in fantasy scripts, though they are the most common stage after logographies.

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            • tonwood@mathstodon.xyzT tonwood@mathstodon.xyz
              This post did not contain any content.
              farbs@mastodon.socialF This user is from outside of this forum
              farbs@mastodon.socialF This user is from outside of this forum
              farbs@mastodon.social
              wrote last edited by
              #9

              @tonwood interesting idea to limit it to exactly six. I guess at least that excludes a certain hate speech symbol 😬

              tonwood@mathstodon.xyzT 1 Reply Last reply
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              • farbs@mastodon.socialF farbs@mastodon.social

                @tonwood interesting idea to limit it to exactly six. I guess at least that excludes a certain hate speech symbol 😬

                tonwood@mathstodon.xyzT This user is from outside of this forum
                tonwood@mathstodon.xyzT This user is from outside of this forum
                tonwood@mathstodon.xyz
                wrote last edited by
                #10

                @Farbs Fixing the number makes for inherent error-detection; and using exactly half maximizes the set of choices (before weeding out the disconnected).

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                • gregegansf@mathstodon.xyzG gregegansf@mathstodon.xyz

                  @tonwood

                  This is very cool!

                  Here are representatives of the 45 orbits of these figures under the group D_4 (the eight rotations and reflections that are isometries of a square), so no pair of these 45 figures are rotations/reflections of each other.

                  Link Preview Image
                  svengeier@mathstodon.xyzS This user is from outside of this forum
                  svengeier@mathstodon.xyzS This user is from outside of this forum
                  svengeier@mathstodon.xyz
                  wrote last edited by
                  #11

                  @gregeganSF @tonwood
                  These two sure 𝑙𝑜𝑜𝑘 like mirror images to me...

                  gregegansf@mathstodon.xyzG 1 Reply Last reply
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                  • svengeier@mathstodon.xyzS svengeier@mathstodon.xyz

                    @gregeganSF @tonwood
                    These two sure 𝑙𝑜𝑜𝑘 like mirror images to me...

                    gregegansf@mathstodon.xyzG This user is from outside of this forum
                    gregegansf@mathstodon.xyzG This user is from outside of this forum
                    gregegansf@mathstodon.xyz
                    wrote last edited by
                    #12

                    @SvenGeier @tonwood

                    Yes, they are mirror images if you ignore the position of the white space within the square.

                    So if I was trying to construct, say, a set of unique wooden objects that could be rotated and flipped over, it would only contain one of that pair.

                    Similarly, the last two figures in the original post’s third-last row look like they are duplicates, but one has a column of white space on the left, the other has it on the right.

                    svengeier@mathstodon.xyzS 1 Reply Last reply
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                    • gregegansf@mathstodon.xyzG gregegansf@mathstodon.xyz

                      @SvenGeier @tonwood

                      Yes, they are mirror images if you ignore the position of the white space within the square.

                      So if I was trying to construct, say, a set of unique wooden objects that could be rotated and flipped over, it would only contain one of that pair.

                      Similarly, the last two figures in the original post’s third-last row look like they are duplicates, but one has a column of white space on the left, the other has it on the right.

                      svengeier@mathstodon.xyzS This user is from outside of this forum
                      svengeier@mathstodon.xyzS This user is from outside of this forum
                      svengeier@mathstodon.xyz
                      wrote last edited by
                      #13

                      @gregeganSF @tonwood I guess I'll leave the "whitespace is significant" to the Python programmers...

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