Positive differential operators in the Krein space L2(ℝn)

1998 ◽  
pp. 113-129 ◽  
Author(s):  
Branko Ćurgus ◽  
Branko Najman
Keyword(s):  
Differential Operators ◽  
Krein Space ◽  
Kreĭn Space

Krein Space-based Hθ Fault Estimation for Linear Discrete Time-varying Systems

2009 ◽  
Vol 34 (12) ◽  
pp. 1529-1533 ◽  
Author(s):  
Mai-Ying ZHONG ◽  
Shuai LIU ◽  
Hui-Hong ZHAO
Keyword(s):  
Discrete Time ◽  
Krein Space ◽  
Fault Estimation ◽  
Time Varying ◽  
Time Varying Systems ◽  
Kreĭn Space

scholarly journals The boundary of the Krein space tracial numerical range, an algebraic approach and a numerical algorithm

2009 ◽  
Vol 189 (4) ◽  
pp. 539-551
Author(s):  
N. Bebiano ◽  
H. Nakazato ◽  
A. Nata ◽  
J. da Providência
Keyword(s):  
Numerical Algorithm ◽  
Numerical Range ◽  
Krein Space ◽  
Algebraic Approach ◽  
Kreĭn Space

scholarly journals A Krein space-based approach to event-triggered H∞ filtering for linear discrete time-varying systems

Automatica ◽  
2022 ◽  
Vol 135 ◽  
pp. 110001
Author(s):  
Maiying Zhong ◽  
Steven X. Ding ◽  
Qing-Long Han ◽  
Xiao He ◽  
Donghua Zhou
Keyword(s):  
Discrete Time ◽  
Krein Space ◽  
Time Varying ◽  
Time Varying Systems ◽  
Kreĭn Space ◽  
Event Triggered

scholarly journals SPECTRUM OF GRAVITATIONAL WAVES IN KREIN SPACE QUANTIZATION

2011 ◽  
Vol 26 (36) ◽  
pp. 2697-2702 ◽  
Author(s):  
M. MOHSENZADEH ◽  
A. SOJASI ◽  
E. YUSOFI
Keyword(s):  
Gravitational Waves ◽  
Krein Space ◽  
Slow Roll ◽  
Primordial Power Spectrum ◽  
Alternative Approach ◽  
Special Cases ◽  
Kreĭn Space ◽  
Field Quantization ◽  
Krein Space Quantization ◽  
Scalar Perturbations

The main goal of this paper is to derive the primordial power spectrum for the scalar perturbations generated as a result of quantum fluctuations during an inflationary period by an alternative approach of field quantization.1–3 Formulas are derived for the gravitational waves, special cases of which include power law inflation and inflation in the slow roll approximation, in Krein space quantization.

Robust Kalman filtering via Krein space estimation

2004 ◽  
Vol 151 (1) ◽  
pp. 59-63 ◽  
Author(s):  
T.H. Lee ◽  
J.B. Park ◽  
T.S. Yoon ◽  
W.-S. Ra
Keyword(s):  
Kalman Filtering ◽  
Krein Space ◽  
Kreĭn Space
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