TY  - BOOK
A1  - Yin, Huicheng
A1  - Witt, Ingo
T1  - Global singularity structure of weak solutions to 3-D semilinear dispersive wave equaions with discontinuous initial data
T3  - Preprint / Universität Potsdam, Institut für Mathematik, Arbeitsgruppe Partiell
Y1  - 2002
SN  - 1437-739X
PB  - Univ.
CY  - Potsdam
ER  - 
TY  - JOUR
A1  - Yin, H. C.
A1  - Witt, Ingo
T1  - Global singularity structure of weak solutions to 3-D semilinear dispersive wave equations with discontinuous initial data
N2  - We study the global singularity structure of solutions to 3-D semilinear wave equations with discontinuous initial data. More precisely, using Strichartz' inequality we show that the solutions stay conormal after nonlinear interaction if the Cauchy data are conormal along a circle. (C) 2003 Elsevier Inc. All rights reserved
Y1  - 2004
SN  - 0022-0396
ER  - 
TY  - JOUR
A1  - Witt, Ingo
T1  - Local asymptotic types
N2  - The local theory of asymptotic types is elaborated. It appears as coordinate-free version of part of GOHBERG- SIGAL'S theory of the inversion of finitely meromorphic, operator-valued functions at a point
Y1  - 2004
SN  - 0025-2611
ER  - 
TY  - BOOK
A1  - Witt, Ingo
T1  - Green formulae for cone differential operators
T3  - Preprint / Universität Potsdam, Institut für Mathematik, Arbeitsgruppe Partiell
Y1  - 2003
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  - 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  - BOOK
A1  - Witt, Ingo
T1  - Local asymptotic types
T3  - Preprint / Universität Potsdam, Institut für Mathematik, Arbeitsgruppe Partiell
Y1  - 2002
SN  - 1437-739X
PB  - Univ.
CY  - Potsdam
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  - BOOK
A1  - Witt, Ingo
T1  - On the factorization of meromorphic mellin symbols
T3  - Preprint / Universität Potsdam, Institut für Mathematik, Arbeitsgruppe Partiell
Y1  - 1999
SN  - 1437-739X
PB  - Univ.
CY  - Potsdam
ER  - 
TY  - BOOK
A1  - Witt, Ingo
T1  - Explicit algebras with the Leibniz-Mellin translation product
T3  - Preprint / Universität Potsdam, Institut für Mathematik, Arbeitsgruppe Partiell
Y1  - 1999
SN  - 1437-739X
PB  - Univ.
CY  - Potsdam
ER  -