Results 51 to 60 of about 16,496,952 (144)
Eigenvectors of block circulant and alternating circulant matrices,” Res [PDF]
, 2005 . The eigenvectors and eigenvalues of symmetric block circulant ma-trices had been found, and that method is extended to general block circulant matrices. That analysis is applied to Stephen J.
Garry J. Tee, Tee, Garry J.
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A Novel Hybrid Image Encryption Scheme Using Henon Map for Secure Image Communication
IET Information Security, Volume 2026, Issue 1, 2026.The combination of chaos theory and cryptographic methodologies constitutes a pivotal aspect of the information security. Owing to certain attributes of images, like their large data capacity and significant redundancy, image encryption needs specialized techniques instead of conventional text encryption.
Saba Inam +6 more
wiley +1 more source
Joint 2‐D LFM Modulation and Mismatched Filter Design in Dual‐Function Radar‐Communication System
IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.This paper proposes a joint 2‐D LFM modulation and mismatched filtering design for military‐grade dual‐function radar‐communication systems. The novel scheme modulates data onto both the initial frequency and chirp rate of LFM pulses, boosting data rates whilst preserving the constant‐envelope property critical for high‐power transmission.
Kehao Wang +5 more
wiley +1 more source
Periodic Solutions to a Ring of Identical Cells With Delay via the Equivariant Degree Method
International Journal of Differential Equations, Volume 2026, Issue 1, 2026.We investigate the existence and multiplicity of bifurcating solutions in a Hopfield–Cohen–Grossberg network with n identical components and time delays. Applying the equivariant degree method, we derive sufficient conditions guaranteeing periodic solutions and their multiplicities. Two examples are provided to exemplify the theoretical results.
Shi Yu, Igor Freire
wiley +1 more source
On the Research of the Secondary Transpose of Tensors via the C‐Product
Journal of Applied Mathematics, Volume 2026, Issue 1, 2026.This paper develops a secondary transpose for third‐order real tensors under the C‐product. The operation is defined in the discrete‐cosine‐transform domain, reverses the order of the C‐product, and is naturally related to the usual transpose through secondary identity tensors.
Hongwei Jin +3 more
wiley +1 more source
Chebyshev polynomials and r-circulant matrices
, 2022 This paper connects two attractive topics in applied mathematics, r-circulant matrices and the Chebyshev polynomials. The r-circulant matrices whose entries are the Chebyshev polynomials of the first or second kind are considered.
Pešović, Marko, Pucanović, Zoran
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Some equalities for generalized inverses of matrix sums and block circulant matrices [PDF]
, 2001 summary:Let $ A_1, A_2,\cdots , A_n $ be complex matrices of the same size. We show in this note that the Moore-Penrose inverse, the Drazin inverse and the weighted Moore-Penrose inverse of the sum $ \sum _{t=1}^{n} A_t$ can all be determined by the ...
Tian, Yongge
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Circulant Matrices and Time-series Analysis [PDF]
This paper sets forth some of the salient results in the algebra of circulant matrices which can be used in time-series analysis. It provides easy derivations of some results that are central to the analysis of statistical periodograms and empirical ...
Stephen Pollock
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, 2013 This paper presents a class of finite n x n bimatrix (2-player) games we coin Circulant Games. In Circulant Games, each player's payoff matrix is a circulant matrix, i.e.\ each row vector is rotated one element relative to the preceding row vector.
Kern, Johannes, Granic, Dura-Georg
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Subsampled circulant matrix based analogue compressed sensing
, 2012 The modulated wideband converter (MWC) is an attractive analogue compressed sensing technique proposed recently. Unfortunately, the MWC has high hardware complexity owing to its parallel structure. To reduce the complexity, proposed is a novel subsampled
Tao, X +4 more
core +1 more source