Arbeitsgruppe Funktionalanalysis



32.

Jacob, Birgit; Trunk, Carsten
Location of the spectrum of operator matrices which are associated to second order equations
Oper. Matrices, 1 (1) :45--60
2007

31.

Jacob, Birgit; Morris, Kirsten; Trunk, Carsten
Minimum-phase infinite-dimensional second-order systems
IEEE Trans. Automat. Control, 52 (9) :1654--1665
2007

30.

Jacob, Birgit; Schnaubelt, Roland
Observability of polynomially stable systems
Systems Control Lett., 56 (4) :277--284
2007

29.

Jacob, Birgit; Partington, Jonathan R.
On controllability of diagonal systems with one-dimensional input space
Systems Control Lett., 55 (4) :321--328
2006

28.

Jacob, Birgit; Partington, Jonathan R.
Admissibility of control and observation operators for semigroups: a survey
, Current trends in operator theory and its applications Band 149 aus Oper. Theory Adv. Appl.
Seite 199--221
Herausgeber: Birkhäuser, Basel
2004
199--221

27.

Jacob, Birgit
What is the better signal space for discrete-time systems: l_2(\Bbb Z) or l_2(\Bbb N_0)?
SIAM J. Control Optim., 43 (4) :1521--1534
2004

26.

Winkin, Joseph J.; Callier, Frank M.; Jacob, Birgit; Partington, Jonathan R.
Spectral factorization by symmetric extraction for distributed parameter systems
SIAM J. Control Optim., 43 (4) :1435--1466
2004

25.

Jacob, Birgit; Zwart, Hans
Counterexamples concerning observation operators for C_0-semigroups
SIAM J. Control Optim., 43 (1) :137--153
2004

24.

Jacob, Birgit; Partington, Jonathan R.
Admissible control and observation operators for Volterra integral equations
J. Evol. Equ., 4 (3) :333--343
2004

23.

Jacob, Birgit
An operator theoretical approach towards systems over the signal space l_2(\Bbb Z)
Integral Equations Operator Theory, 46 (2) :189--214
2003

22.

Jacob, Birgit; Partington, Jonathan R.; Pott, Sandra
Conditions for admissibility of observation operators and boundedness of Hankel operators
Integral Equations Operator Theory, 47 (3) :315--338
2003

21.

Zwart, Hans; Jacob, Birgit; Staffans, Olof
Weak admissibility does not imply admissibility for analytic semigroups
, Band 48
Seite 341--350
2003
341--350

20.

Jacob, Birgit; Partington, Jonathan R.; Pott, Sandra
Admissible and weakly admissible observation operators for the right shift semigroup
Proc. Edinb. Math. Soc. (2), 45 (2) :353--362
2002

19.

Jacob, Birgit; Zwart, Hans
Properties of the realization of inner functions
Math. Control Signals Systems, 15 (4) :356--379
2002

18.

Jacob, Birgit; Leblond, Juliette; Marmorat, Jean-Paul; Partington, Jonathan R.
A constrained approximation problem arising in parameter identification
, Band 351/352
Seite 487--500
2002
487--500

17.

Jacob, Birgit
Zeros of Fredholm operator valued H^p-functions
Math. Nachr., 227 :81--97
2001

16.

Jacob, Birgit; Zwart, Hans
Exact observability of diagonal systems with a one-dimensional output operator
, Band 11
Seite 1277--1283
2001
1277--1283

15.

Jacob, Birgit; Zwart, Hans
Exact controllability of C_0-groups with one-dimensional input operators
Advances in mathematical systems theory aus Systems Control Found. Appl.
Seite 221--242
Herausgeber: Birkhäuser Boston, Boston, MA
2001
221--242

14.

Jacob, Birgit; Partington, Jonathan R.
The Weiss conjecture on admissibility of observation operators for contraction semigroups
Integral Equations Operator Theory, 40 (2) :231--243
2001

13.

Jacob, Birgit; Partington, Jonathan R.
On the boundedness and continuity of the spectral factorization mapping
SIAM J. Control Optim., 40 (1) :88--106
2001

12.

Jacob, Birgit; Zwart, Hans
Exact observability of diagonal systems with a finite-dimensional output operator
Systems Control Lett., 43 (2) :101--109
2001

11.

Jacob, Birgit
Corrections to: ``A sufficient condition for exact observability of spectral systems" [Kyungpook Math. J. \bf 35 (1996), no. 3, Special Issue, 427--434; MR1677625 (2000a:93019)] by S. K. Chang and S. M. Hwang
Kyungpook Math. J., 40 (2) :323--325
2000

10.

Jacob, Birgit; Partington, Jonathan R.
Graphs, closability, and causality of linear time-invariant discrete-time systems
Internat. J. Control, 73 (11) :1051--1060
2000

9.

Jacob, Birgit; Partington, Jonathan R.; Ünalmış, Banu
On discrete-time linear systems with almost-periodic kernels
J. Math. Anal. Appl., 252 (2) :549--570
2000

8.

Jacob, Birgit; Winkin, Joseph; Zwart, Hans
Continuity of the spectral factorization on a vertical strip
Systems Control Lett., 37 (4) :183--192
1999