Boole's Inequality - Proof

Proof

Boole's inequality may be proved using the method of induction.

For the case, it follows that

For the case, we have

Since and because the union operation is associative, we have

Since, as is the case for any probability measure, we have

,

and therefore

.

Read more about this topic:  Boole's Inequality

Famous quotes containing the word proof:

    From whichever angle one looks at it, the application of racial theories remains a striking proof of the lowered demands of public opinion upon the purity of critical judgment.
    Johan Huizinga (1872–1945)

    If we view our children as stupid, naughty, disturbed, or guilty of their misdeeds, they will learn to behold themselves as foolish, faulty, or shameful specimens of humanity. They will regard us as judges from whom they wish to hide, and they will interpret everything we say as further proof of their unworthiness. If we view them as innocent, or at least merely ignorant, they will gain understanding from their experiences, and they will continue to regard us as wise partners.
    Polly Berrien Berends (20th century)

    If some books are deemed most baneful and their sale forbid, how, then, with deadlier facts, not dreams of doting men? Those whom books will hurt will not be proof against events. Events, not books, should be forbid.
    Herman Melville (1819–1891)