A reader posed a [http://mathoverflow.net/questions/9292/newbie-boolean-algebra-question question] at [http://mathoverflow.net/ MathOverFlow] asking for a proof of the following equation in boolean algebra:
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A [http://mathoverflow.net/questions/9292/newbie-boolean-algebra-question question] posted at [http://mathoverflow.net/ MathOverFlow] asked for a proof of the following equation in boolean algebra: