Let A ⊂ [1,2] be a (δ,σ)-set with measure |A| = δ1−σ in the sense of Katz and Tao. For σ ∈(1 2,1) we show that
for c = (1 − σ)(2σ − 1)∕(6σ + 4). This improves the bound of Guth, Katz, and Zahl for large σ.
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