[Elementos da Matematica] Quantificadore

[Me_Titus]

Oi,

Estou a ter muita dificuldade a entender estes conceitos. Sera que alguem me poderia atraves de exemplo, explicar as seguintes condicoes?



Obrigado

[Me_Titus]

Para quem tiver com dificuldades em entender este assunto:

"For example x y P( x, y ) is not equivalent to y x P( x, y ). For let P( x, y ) represent x < y for the set of numbers as the universe, for example. Then x y P( x, y ) reads "for every number x, there is a number y that is greater than x", which is true, while y x P( x, y ) reads "there is a number y that is greater than any number", which is not true. "

Ajudou-me imenso.

http://www.cs.odu.edu/~toida/nerzic/lev ... ation.html