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===Prédicats===

===Prédicats===

What we have briefly described so far is the logic of propositions. A proposition asserts something about specific mathematical objects such as: '2 is greater than 1, so 1 is less than 2' or 'a square has no 5 sides then a square is not a pentagon'. Many times, however, the mathematical statements concern not the single object, but generic objects of a set such as: '''<math>X</math>'' are taller than 2 meters' where ''<math>X</math>'' denotes a generic group (for example all volleyball players). In this case we speak of predicates.

Ce que nous avons brièvement décrit jusqu'à présent est la logique des propositions. Une proposition affirme quelque chose à propos d'objets mathématiques spécifiques tels que : "2 est supérieur à 1, donc 1 est inférieur à 2" ou "un carré n'a pas 5 côtés, donc un carré n'est pas un pentagone".. Many times, however, the mathematical statements concern not the single object, but generic objects of a set such as: '''<math>X</math>'' are taller than 2 meters' where ''<math>X</math>'' denotes a generic group (for example all volleyball players). In this case we speak of predicates.

Intuitively, a predicate is a sentence concerning a group of elements (which in our medical case will be the patients) and which states something about them.

Intuitively, a predicate is a sentence concerning a group of elements (which in our medical case will be the patients) and which states something about them.