Recent content by lpetrich

  1. lpetrich

    B How hard have they banged on quarks, electrons, etc.?

    This question presumably refers to how much energy has been put into these particles in an attempt to break them apart. Entity Energy / mass Atoms - ionization of hydrogen (worst case) ~ 10-8 Nuclei - 1 MeV / nucleon ~ 10-3 Hadrons ~ 1 Let's now do this calculation for leptons and...
  2. lpetrich

    Challenge Riddles and Puzzles: Extend the following to a valid equation

    Doing #124
  3. lpetrich

    Challenge Riddles and Puzzles: Extend the following to a valid equation

    #101
  4. lpetrich

    Challenge Riddles and Puzzles: Extend the following to a valid equation

    #100
  5. lpetrich

    Challenge Riddles and Puzzles: Extend the following to a valid equation

    #99
  6. lpetrich

    Challenge Riddles and Puzzles: Extend the following to a valid equation

    #98
  7. lpetrich

    Challenge Riddles and Puzzles: Extend the following to a valid equation

    #97 - presumably the Euler phi function, the count of all positive integers less than the arg that do not evenly divide the arg.
  8. lpetrich

    Challenge Riddles and Puzzles: Extend the following to a valid equation

    Solution of #94
  9. lpetrich

    Challenge Riddles and Puzzles: Extend the following to a valid equation

    #87
  10. lpetrich

    Challenge Riddles and Puzzles: Extend the following to a valid equation

    #86
  11. lpetrich

    Challenge Riddles and Puzzles: Extend the following to a valid equation

    #78 #79
  12. lpetrich

    Challenge Riddles and Puzzles: Extend the following to a valid equation

    I will try #77, interpreting as "jigsaw puzzles".
  13. lpetrich

    Challenge Riddles and Puzzles: Extend the following to a valid equation

    So it's swap outer and middle along each diagonal. Indeed there is. Inner-triangle length-equal solutions 28: 96 16 2 29: 192 32 4 30: 480 80 10 31: 864 144 18 32: 1248 208 26 33: 768 128 16 34: 1248 208 26 35: 864 144 18 36: 480 80 10 37: 192 32 4 38: 96 16 2 Total: 6528 1088 136 (raw...
  14. lpetrich

    Challenge Riddles and Puzzles: Extend the following to a valid equation

    How does that symmetry work? I find it difficult to picture.
  15. lpetrich

    Challenge Riddles and Puzzles: Extend the following to a valid equation

    I have just done so. The number of solutions for each sum value is; 28: 96 16 29: 192 32 30: 480 80 31: 864 144 32: 1248 208 33: 768 128 34: 1248 208 35: 864 144 36: 480 80 37: 192 32 38: 96 16 with the total number and the number to within symmetries.
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