摘要
We show that if an exponential polynomial ∑i=1mPi(z)eQi(z), where P i , Q i ∈ C[z] , is a dth power, d≥ 2 , of an entire function g, then g itself is also an exponential polynomial. We also study when a multivariable polynomial with moving targets of slow growth evaluated at unit arguments can be a dth power of an entire function. Finally, we formulate a boundary case of the Green–Griffiths–Lang conjecture for projective spaces with moving targets.