Browsing by Author "John Ogonji Agure, David Otieno Ambogo, Fredrick Oluoch Nyamwala"
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Deficiency indices and spectrum of fourth order difference equations with unbounded coefficients
John Ogonji Agure, David Otieno Ambogo, Fredrick Oluoch Nyamwala (WILEY‐VCH Verlag, 2013-03)Using subspace theory together with appropriate smoothness and decay conditions, we calculated the deficiency indices and absolutely continuous spectrum of fourth order difference equations with unbounded coefficients. In ...