Inequalities are developed for the fraction of a bandlimited function'
s L(p) norm that can be concentrated on any set of small "Nyquist dens
ity." Two applications are mentioned. First, that a bandlimited functi
on corrupted by impulsive noise can be reconstructed perfectly, provid
ed the noise is concentrated on a set of Nyquist density < 1/pi; secon
d, that a wideband signal supported on a set of Nyquist density < 1/pi
can be reconstructed stably from noisy data, even when the low-freque
ncy information is completely missing.