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===Predicados===

===Predicados===

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.

O que descrevemos brevemente até agora é a lógica das proposições. Uma proposição afirma algo sobre objetos matemáticos específicos, como: '2 é maior que 1, então 1 é menor que 2' ou 'um quadrado não tem 5 lados, então um quadrado não é um pentágono'. 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.