An Entropic Proof of Chang's Inequality
classification
💻 cs.CC
math.CO
keywords
changgiveproofadditiveanalysisbiasedbooleancase
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read the original abstract
Chang's lemma is a useful tool in additive combinatorics and the analysis of Boolean functions. Here we give an elementary proof using entropy. The constant we obtain is tight, and we give a slight improvement in the case where the variables are highly biased.
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