Factorization of quasi-differential operators
Factorization of quasi-differential operators
A quasi-differential generalization of operators of the form <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="l Subscript n Baseline u equals u Superscript left-parenthesis n right-parenthesis Baseline plus p 1 u Superscript left-parenthesis n minus 1 right-parenthesis Baseline plus midline-horizontal-ellipsis plus p Subscript n Baseline u"> <mml:semantics> <mml:mrow> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:msub> <mml:mi>l</mml:mi> <mml:mi>n</mml:mi> …