PZ Yuan, HB Chen - Acta Mathematica Sinica, 2005 - Springer
Abstract Let a 0< a 1<···< an be positive integers with sums ∑ i= 0^ n ε _ i a_ i\left (ε _ i= 0,
1\right) distinct. P. Erdös conjectured that ∑ i= 0^ n 1/a_ i ∑ i= 0^ n 1/2^ i. The best known …