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Collaborations and top research areas from the last five years
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Editorial Introduction
Alpay, D., Lewkowicz, I., Vajiac, A. & Vajiac, M., 1 Jan 2026, In: Operator Theory: Advances and Applications. 308, p. v-viiiResearch output: Contribution to journal › Editorial
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Schur Analysis and Applications to Hypercomplex Analysis, Neural Networks, and Linear Systems: Chapman University, January 2024
Alpay, D. (Editor), Lewkowicz, I. (Editor), Vajiac, A. (Editor) & Vajiac, M. (Editor), 12 May 2026, 1st ed. Cham: Birkhäuser Cham. 684 p. (Operator Theory: Advances and Applications Series; vol. 308)Research output: Book/Report › Book › peer-review
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On the hyper-Lyapunov matrix inclusions
Lewkowicz, I., 1 Aug 2024, In: Linear Algebra and Its Applications. 694, p. 414-440 27 p.Research output: Contribution to journal › Article › peer-review
1 Scopus citations -
Quantitatively hyper-positive real rational functions II
Alpay, D. & Lewkowicz, I., 15 Sep 2024, In: Linear Algebra and Its Applications. 697, p. 332-364 33 p.Research output: Contribution to journal › Article › peer-review
1 Scopus citations -
Discrete Wiener algebra in the bicomplex setting, spectral factorization with symmetry, and superoscillations
Alpay, D., Lewkowicz, I. & Vajiac, M., 1 Jun 2023, In: Analysis and Mathematical Physics. 13, 3, 54.Research output: Contribution to journal › Article › peer-review
Open Access2 Scopus citations -
Interpolation with symmetry and a Herglotz theorem in the bicomplex setting
Alpay, D., Lewkowicz, I. & Vajiac, M., 15 Aug 2023, In: Journal of Mathematical Analysis and Applications. 524, 2, 127201.Research output: Contribution to journal › Article › peer-review
5 Scopus citations -
On realization of left and right products of rational functions
Alpay, D. & Lewkowicz, I., 1 Jun 2023, In: Linear Algebra and Its Applications. 666, p. 42-61 20 p.Research output: Contribution to journal › Article › peer-review
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Representation theory and multilevel filters
Alpay, D., Jorgensen, P. & Lewkowicz, I., 1 Apr 2023, In: Journal of Applied Mathematics and Computing. 69, 2, p. 1599-1657 59 p.Research output: Contribution to journal › Article › peer-review
Open Access1 Scopus citations -
Novel Results on Mode Estimation in Jump Systems
Harpaz, Y., Lewkowicz, I. & Choukroun, D., 1 Jan 2022, IACAS 2022 - 61st Israel Annual Conference on Aerospace Science. Technion – Israel Institute of Technology, (IACAS 2022 - 61st Israel Annual Conference on Aerospace Science).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review
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A Unified Framework for Continuous/Discrete Positive/Bounded Real State-Space Systems
Lewkowicz, I., 2 Feb 2021, p. 1-16, 16 p.Research output: Working paper/Preprint › Preprint
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Projects
- 1 Active
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Applications of reproducing kernels, and state space methods to signal processing, and wavelets
Jorgensen, P. (PI), Alpay, D. A. (CoPI), Lewkowicz, I. (CoPI) & Volok, D. D. (CoPI)
United States-Israel Binational Science Foundation (BSF)
1/01/10 → …
Project: Research