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Lattice laws #9

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@hdgarrood

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@hdgarrood

Based on https://en.wikipedia.org/wiki/Lattice_(order) should Lattice have the following additional laws?

  • Supremum:
    • x || y >= x
    • x || y >= y
  • Infimum:
    • x && y <= x
    • x && y <= y

We could potentially go even further and require that x || y is the least upper bound of {x, y}, and similar for &&.

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