Research Group Functional Analysis

Publications B. Jacob

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

DOI: 10.7153/oam-01-03

31.

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

DOI: 10.1109/TAC.2007.904471

30.

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

DOI: 10.1016/j.sysconle.2006.10.006

29.

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

DOI: 10.1016/j.sysconle.2005.08.008

28.

Jacob, Birgit; Partington, Jonathan R.
Admissibility of control and observation operators for semigroups: a survey
, Current trends in operator theory and its applications Volume 149 from Oper. Theory Adv. Appl.
Page 199--221
Publisher: 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

DOI: 10.1137/S0363012902412471

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

DOI: 10.1137/S0363012902416456

25.

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

DOI: 10.1137/S0363012903423235

24.

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

DOI: 10.1007/s00028-004-0152-0

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

DOI: 10.1007/s000200300024

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

DOI: 10.1007/s00020-002-1165-0

21.

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

DOI: 10.1016/S0167-6911(02)00277-3

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

DOI: 10.1017/S0013091500001024

19.

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

DOI: 10.1007/s004980200015

18.

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

DOI: 10.1016/S0024-3795(01)00445-1

17.

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

DOI: 10.1002/1522-2616(200107)227:1<81::AID-MANA81>3.3.CO;2-U

16.

Jacob, Birgit; Zwart, Hans
Exact observability of diagonal systems with a one-dimensional output operator
, Volume 11
Page 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 from Systems Control Found. Appl.
Page 221--242
Publisher: 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

DOI: 10.1007/BF01301467

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

DOI: 10.1137/S036301299935184X

12.

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

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