Prove That $\overline { A \cap B } = \bar { A } \cup \bar { B }$

question 131

Essay

Prove that $\overline { A \cap B } = \bar { A } \cup \bar { B }$ by giving a containment proof (that is, prove that the left side is a subset of the right side and that the right side is a subset of the left side).

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Definitions:

Stock Price

Stock price is the cost of purchasing a share of a company, reflecting the market's valuation of the company at any given time.

Time Spread

An options strategy involving the purchase and sale of two options of the same type and strike price but with different expiration dates.

Exercise Price

The price at which the holder of an option can buy (in the case of a call option) or sell (in the case of a put option) the underlying security.

Expiration Date

The specific date upon which an options or futures contract is no longer valid and the right to exercise it ceases.