A necessary condition for an extremum on a stratified set dimensions, we introduce a special (
stratified) measure and define a divergence operator (as the flow density
 Theoretical analysis of charge carrier injection and transport in QLED layers was 
attempted assuming dynamic equilibrium of trapping and detrapping 
charge carriers. Assuming  traps
 REFLECTION AND TRANSMISSION COEFFICIENTS FOR PERIODIC 2-STRATIFIED STRUCTURESREFLECTION AND TRANSMISSION COEFFICIENTS FOR PERIODIC 2-
STRATIFIED STRUCTURES
 Maximum principle for subharmonic functions on a stratified setThe strong maximum principle is proved for solutions of the inequality ∆u≥0 on a 
stratified set
 Real-time threshold voltage and mobility compensation for large-size AMOLED displays charging  sensing (LCS) has been developed. This compensation method can accomplish the Vth and u sensing