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CIRCLE WITH A DOT

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  • tonwood@mathstodon.xyzT tonwood@mathstodon.xyz
    This post did not contain any content.
    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
    #2

    @tonwood - are you trying to tell me something?

    tonwood@mathstodon.xyzT 1 Reply Last reply
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    • johncarlosbaez@mathstodon.xyzJ johncarlosbaez@mathstodon.xyz

      @tonwood - are you trying to tell me something?

      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
      #3

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

      johncarlosbaez@mathstodon.xyzJ 1 Reply Last reply
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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
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          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.

                1 Reply Last reply
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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).

                    1 Reply Last reply
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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 π‘™π‘œπ‘œπ‘˜ 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 π‘™π‘œπ‘œπ‘˜ 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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