Nikol'skaya Ekaterina Ivanovna

Publications in Math-Net.Ru

1. A component-wise estimate for the difference of partial sums of root vector function expansions, which correspond to two Schrödinger operators with non-Hermitian matrix potentials, for vector functions with monotone components
   
   Differ. Uravn., 30:1 (1994),  60–69
2. An estimate for the difference of partial sums of spectral expansions of an absolutely continuous function that correspond to two one-dimensional Schrödinger operators with complex-valued potentials in the class $L_p$, for $p>1$
   
   Differ. Uravn., 29:1 (1993),  118–127
3. An estimate for the difference of partial sums of expansions of an absolutely continuous function in root functions corresponding to two one-dimensional Schrödinger operators with complex-valued potentials in the class $L_1$
   
   Differ. Uravn., 28:4 (1992),  598–612