A spectral representation on ordinary linear difference equation with operator-valued coefficients of the second order
Masahisa Fukushima · Journal of Mathematical Physics · 1976
The spectral theory associated with two-dimensional linear partial difference operators of the second order on the pseudo-Hilbert space originated by Berezanskii is studied. The present discussion, partly in Govindaraju’s style, is essentially based on the Kodaira’s method.