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urp:geometry [2021-10-21] nerf_herder |
urp:geometry [2021-11-17] (current) nerf_herder |
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* [[Polygons]] | * [[Polygons]] | ||
+ | === misc === | ||
+ | Truth tables: | ||
+ | first columns : True/False values of the variables, such as p, q, or p' or ~p for inverse values. Next columns are logic combinations of the variables | ||
+ | |||
+ | | p | q | p ⋂ q | p ⋃ q| p => q | | ||
+ | | T | T | T | T | T | | ||
+ | | T | F | F | T | F | | ||
+ | | F | T | F | T | T | | ||
+ | | F | F | F | F | T | | ||
+ | |||
+ | p => q means condition p implies condition q. If p is true, then an implication can be drawn or not, depending on q. If p is false, then an implication cannot be ruled out, regardless of q, so it is left as true. | ||
+ | |||
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=== See Also === | === See Also === | ||