TY  - BOOK
A1  - Witt, Ingo
T1  - A calculus for a class of finitely degenerate pseudodifferential operators
T3  - Preprint / Universität Potsdam, Institut für Mathematik, Arbeitsgruppe Partiell
Y1  - 2002
SN  - 1437-739X
PB  - Univ.
CY  - Potsdam
ER  - 
TY  - INPR
A1  - Witt, Ingo
T1  - A calculus for a class of finitely degenerate pseudodifferential operators
N2  - For a class of degenerate pseudodifferential operators, local parametrices are constructed. This is done in the framework of a pseudodifferential calculus upon adding conditions of trace and potential type, respectively, along the boundary on which the operators degenerate.
T3  - Preprint - (2002) 05 
Y1  - 2002
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-26246
ER  - 
TY  - INPR
A1  - Witt, Ingo
T1  - Asymptotic algebras
N2  - The concept of asymptotic type that primarily appears in singular and asymptotic analysis is developed. Especially, asymptotic algebras are introduced.
T3  - Preprint - (2001) 23 
Y1  - 2001
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-26069
ER  - 
TY  - BOOK
A1  - Witt, Ingo
T1  - Asymptotic algebras
T3  - Preprint / Universität Potsdam, Institut für Mathematik, Arbeitsgruppe Partiell
Y1  - 2001
SN  - 1437-739X
PB  - Univ.
CY  - Potsdam
ER  - 
TY  - INPR
A1  - Xiaochun, Liu
A1  - Witt, Ingo
T1  - Asymptotic expansions for bounded solutions to semilinear Fuchsian equations
N2  - It is shown that bounded solutions to semilinear elliptic Fuchsian equations obey complete asymptoic expansions in terms of powers and logarithms in the distance to the boundary. For that purpose, Schuze's notion of asymptotic type for conormal asymptotics close to a conical point is refined. This in turn allows to perform explicit calculations on asymptotic types - modulo the resolution of the spectral problem for determining the singular exponents in the asmptotic expansions.
T3  - Preprint - (2001) 01 
KW  - Calculus of conormal symbols
KW  - conormal asymptotic expansions
KW  - discrete saymptotic types
KW  - weighted Sobolev spaces with discrete saymptotics
Y1  - 2001
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-25912
ER  - 
TY  - BOOK
A1  - Liu, Xiaochun
A1  - Witt, Ingo
T1  - Asymptotic expansions for bounded solutions to semilinear fuchsian equations
T3  - Preprint / Universität Potsdam, Institut für Mathematik, Arbeitsgruppe Partiell
Y1  - 2001
SN  - 1437-739X
PB  - Univ.
CY  - Potsdam
ER  - 
TY  - THES
A1  - Witt, Ingo
T1  - Beiträge zur Theorie singulärer hyperbolischer Differentialoperatoren
Y1  - 2003
CY  - Potsdam
ER  - 
TY  - BOOK
A1  - Harutjunjan, Gohar
A1  - Schulze, Bert-Wolfgang
A1  - Witt, Ingo
T1  - Boundary value problems in the edge pseudo-differential calculus
T3  - Preprint / Universität Potsdam, Institut für Mathematik, Arbeitsgruppe Partiell
Y1  - 2000
SN  - 1437-739X
PB  - Univ.
CY  - Potsdam
ER  - 
TY  - INPR
A1  - Kapanadze, David
A1  - Schulze, Bert-Wolfgang
A1  - Witt, Ingo
T1  - Coordinate invariance of the cone algebra with asymptotics
N2  - The cone algebra with discrete asymptotics on a manifold with conical singularities is shown to be invariant under natural coordinate changes, where the symbol structure (i.e., the Fuchsian interior symbol, conormal symbols of all orders) follows a corresponding transformation rule.
T3  - Preprint - (2000) 01 
Y1  - 2000
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-25671
ER  - 
TY  - BOOK
A1  - Kapanadze, David
A1  - Schulze, Bert-Wolfgang
A1  - Witt, Ingo
T1  - Coordinate invarince of the cone algebra with asymptotics
T3  - Preprint / Universität Potsdam, Institut für Mathematik, Arbeitsgruppe Partiell
Y1  - 2000
SN  - 1437-739X
PB  - Univ.
CY  - Potsdam
ER  -