Nonexistence of a geometric progression that contains four triangular numbers. Fang, Jin-Hui — 2007 Integers
Neither ∏ k = 1 n ( 4 k 2 + 1 ) nor ∏ k = 1 n ( 2 k ( k - 1 ) + 1 ) is a perfect square. Fang, Jin-Hui — 2009 Integers
On n ∣ ϕ ( n ) d ( n ) + 2 and n ∣ ϕ ( n ) σ ( n ) + 1 . Chen, Yong-Gao; Fang, Jin-Hui — 2008 Integers
On the subset sums of exponential type sequences Yong-Gao Chen; Jin-Hui Fang; Norbert Hegyvári — 2016 Acta Arithmetica