Publications

15.

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

DOI: 10.1007/BF01301467

14.

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

DOI: 10.1137/S036301299935184X

13.

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

DOI: 10.1016/S0167-6911(00)00117-1

12.

Farkas, Bálint; Matolcsi, Máté
Commutation properties of the form sum of positive, symmetric operators
Acta Sci. Math. (Szeged), 67 (3-4) :777-790
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

DOI: 10.1080/002071700411331

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

DOI: 10.1006/jmaa.2000.6997

8.

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

DOI: 10.1016/S0167-6911(99)00019-5

7.

Zwart, Hans; Jacob, Birgit
Equivalent conditions for stabilizability of infinite-dimensional systems with admissible control operators
SIAM J. Control Optim., 37 (5) :1419--1455
1999

DOI: 10.1137/S036301299833344X

6.

Jacob, Birgit
Linear quadratic optimal control of time-varying systems with indefinite costs on Hilbert spaces
Math. Control Signals Systems, 12 (2) :196--218
1999

DOI: 10.1007/PL00009850

5.

Jacob, Birgit
A formula for the stability radius of time-varying systems
J. Differential Equations, 142 (1) :167--187
1998

DOI: 10.1006/jdeq.1997.3348

4.

Jacob, Birgit; Larsen, Mikael; Zwart, Hans
Corrections and extensions of: ``Optimal control of linear systems with almost periodic inputs" [SIAM J. Control Optim. \bf 25 (1987), no. 4, 1007--1019; MR0893995 (88i:93042)] by G. Da Prato and A. Ichikawa
SIAM J. Control Optim., 36 (4) :1473--1480
1998

DOI: 10.1137/S0363012996304614

3.

Jacob, Birgit
Destabilization of infinite-dimensional time-varying systems via dynamical output feedback
, Recent developments in operator theory and its applications (<prt>W</prt>innipeg, <prt>MB</prt>, 1994) Volume 87 from Oper. Theory Adv. Appl.
Page 193--206
Publisher: Birkhäuser, Basel
1996
193--206

2.

Jacob, Birgit; Drăgan, Vasile; Pritchard, Anthony J.
Infinite-dimensional time-varying systems with nonlinear output feedback
Integral Equations Operator Theory, 22 (4) :440--462
1995

DOI: 10.1007/BF01203385

1.

Jacob, Birgit
Linear quadratic optimal control of time-varying systems with indefinite costs on Hilbert spaces: the finite horizon problem
J. Math. Systems Estim. Control, 5 (1) :28
1995