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• Partially ordered set
  Sometimes, we abuse notation and use the same letter <math>P</math> for the poset itself and its set of ...h>. That this is in fact a poset follows immediately by the properties of logical implication. This poset has other interesting properties, as well.
  4 KB (717 words) - 19:01, 25 April 2009
• Logic
  ==Logical Notations== {{main|Logical notation}}
  3 KB (461 words) - 17:13, 14 February 2025
• Summation
  ...] of a number of terms (addends). Summations are often written using sigma notation <math>\left(\sum \right)</math>. ...> which are in <math>S</math>. Usually, the bottom of the sigma contains a logical condition, as in <math>\sum_{i|n}^{n} i</math>, where the sum only includes
  3 KB (480 words) - 14:11, 2 February 2025