sup ,inf , max , min !!!!!!!!!!!!!!!

[nini 2 ASM]

slm
j'ai besoin de la solution
montrer que
http://www.maths-forum.com/images/latex/9b80d6e03cff4bd4233c39eb67698fa8.gif )

[XBEY]

http://latex.codecogs.com/gif.latex?sup%28A%5Ccap%20B%29%5Cneq%20%5Cvarnothi ng supposons que

supposons A et B et majoré on a

http://latex.codecogs.com/gif.latex?A%5Ccap%20B%5Csubseteq%20A
et http://latex.codecogs.com/gif.latex?A%5Ccap%20B%5Csubseteq%20B

donc http://latex.codecogs.com/gif.latex?A%5Ccap%20B est minoré

http://latex.codecogs.com/gif.latex?%5CRightarrow%20sup%28A%5Ccap%20B%29%5Cl eq%20sup%28A%29
et
http://latex.codecogs.com/gif.latex?%5CRightarrow%20sup%28A%5Ccap%20B%29%5Cl eq%20sup%28B%29
D'ou
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