2020/11/20 by Li, Wenjuan, Wang, Huiju, Yan, Dunyan
#35S10 #42B20 #42B25 #Analysis of PDEs (math.AP) #Classical Analysis and ODEs (math.CA) #FOS: Mathematics
paper · doi:10.48550/arxiv.2011.10160
We consider pointwise convergence of nonelliptic Schrödinger means e^itn\squaref(x) for f ∈ Hs(ℝ2) and decreasing sequences \tn\n=1∞ converging to zero, where e^itn\square f( x ): = ∫_ℝ2 e^i( x ⋅ ξ+ tn ξ1ξ2 )\widehatf ( ξ)dξ. We prove that when 0