Arbeitsgruppe Funktionalanalysis

Publikationen

2007
Artikel

47.

Jacob, Birgit; Partington, Jonathan R.; Pott, Sandra
Interpolation by vector-valued analytic functions, with applications to controllability
J. Funct. Anal., 252 (2) :517--549
2007

DOI: 10.1016/j.jfa.2007.07.008

46.

Farkas, Bálint; Révész, Szilárd Gy.
Decomposition as the sum of invariant functions with respect to commuting transformations
Aequationes Math., 73 (3) :233-248
2007

45.

Jacob, Birgit; Partington, Jonathan R.
A resolvent test for admissibility of Volterra observation operators
J. Math. Anal. Appl., 332 (1) :346--355
2007

DOI: 10.1016/j.jmaa.2006.10.023

2006

44.

Farkas, Bálint; Révész, Szilárd Gy.
Tiles with no spectra in dimension 4
Math. Scand., 98 (1) :44-52
2006

43.

Farkas, Bálint; Révész, Szilárd Gy.
Rendezvous numbers of metric spaces--a potential theoretic approach
Arch. Math. (Basel), 86 (3) :268-281
2006

42.

Farkas, Bálint; Révész, Szilárd Gy.
Potential theoretic approach to rendezvous numbers
Monatsh. Math., 148 (4) :309-331
2006

41.

Eröd, János
On the lower bound of the maximum of certain polynomials
East J. Approx., 12 (4) :477-501
2006

40.

Es-Sarhir, Abdelhadi; Farkas, Bálint
Perturbation for a class of transition semigroups on the Hölder space {C\sp θ\sb {b,\rm loc}}(H)
J. Math. Anal. Appl., 315 (2) :666-685
2006

39.

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

38.

Farkas, Bálint; Matolcsi, Máté; Móra, Péter
On Fuglede's conjecture and the existence of universal spectra
J. Fourier Anal. Appl., 12 (5) :483-494
2006

DOI: 10.1007/s00041-005-5069-7

37.

Farkas, Bálint; Lunardi, Alessandra
Maximal regularity for Kolmogorov operators in L\sp 2 spaces with respect to invariant measures
J. Math. Pures Appl. (9), 86 (4) :310-321
2006

DOI: 10.1016/j.jde.2006.09.022

2005

36.

Es-Sarhir, Abdelhadi; Farkas, Bálint
Positivity of perturbed Ornstein-Uhlenbeck semigroups on C\sb b(H)
Semigroup Forum, 70 (2) :208--224
2005

DOI: 10.1007/s00233-004-0167-4

35.

Farkas, Bálint; Révész, Szilárd Gy.
Rendezvous numbers in normed spaces
Bull. Austral. Math. Soc., 72 (3) :423-440
2005
2004
Sammlungsbeiträge

34.

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
Artikel

33.

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

32.

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

31.

Farkas, Bálint
Perturbations of bi-continuous semigroups with applications to transition semigroups on C\sb b(H)
Semigroup Forum, 68 (1) :87-107
2004

DOI: 10.1007/s00233-002-0024-2

30.

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

29.

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

2003

28.

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

27.

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

26.

Farkas, Bálint
On the duals of L\sb p spaces with 0<p<1
Acta Math. Hungar., 98 (1-2) :71-77
2003

25.

Farkas, Bálint; Matolcsi, Máté
Positive forms on Banach spaces
Acta Math. Hungar., 99 (1-2) :43-55
2003
Sammlungsbeiträge

24.

Bátkai, András; Farkas, Bálint
On the effect of small delays to the stability of feedback systems
, Evolution equations: applications to physics, industry, life sciences and economics (<prt>L</prt>evico <prt>T</prt>erme, 2000) Band 55 aus Progr. Nonlinear Differential Equations Appl.
Seite 83-94
Herausgeber: Birkhäuser, Basel
2003
83-94

23.

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

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