Elena Kartaschova,
"A Hierarchy of Generalized Invariants for Linear Partial Differential Operators"
, in Theoretical and Mathematical Physics, Vol. 147, Nummer 3, Springer, Seite(n) 839-846, 6-2006, ISSN: 1573-9333
Original Titel:
A Hierarchy of Generalized Invariants for Linear Partial Differential Operators
Sprache des Titels:
Englisch
Original Kurzfassung:
We study invariants under gauge transformations of linear partial differential operators on two variables. Using results of BK-factorization we construct hierarchy of general invariants for an operator of arbitrary order. Properties of general invariantsare studied and some examples are presented. We also show that classical Laplace invarians correspond to some particular case of general invariants },
journal = {TMPh (Journal of Theoretical and Mathematical Physics)