The group inverse of circulant matrices depending on four parameters

Artikel in diesem Heft

1. Research Articles
2. On the similarity to nonnegative and Metzler Hessenberg forms
3. Cospectral constructions for several graph matrices using cousin vertices
4. Perturbation analysis for the Takagi vector matrix
5. On eigenvalues of a matrix arising in energy-preserving/dissipative continuous-stage Runge-Kutta methods
6. Characteristic polynomial, determinant and inverse of a Fibonacci-Sylvester-Kac matrix
7. Singular matrices that are products of two idempotents or products of two nilpotents
8. Inverse properties of a class of seven-diagonal (near) Toeplitz matrices
9. The group inverse of circulant matrices depending on four parameters
10. Enumeration of some matrices and free linear codes over commutative finite local rings
11. On some reciprocal matrices with elliptical components of their Kippenhahn curves
12. The dual of number sequences, Riordan polynomials, and Sheffer polynomials
13. Combinatorial properties of the enhanced principal rank characteristic sequence over finite fields
14. Spectra inhabiting the left half-plane that are universally realizable
15. Matrix Analysis for Continuous-Time Markov Chains
16. Deficiency indices of block Jacobi matrices and Miura transformation
17. On idempotent stable range 1 matrices
18. On the spread of outerplanar graphs
19. Bounds for the spectral radius of nonnegative matrices and generalized Fibonacci matrices
20. The explicit formula for Gauss-Jordan elimination applied to flexible systems
21. Special Issue: Contemporary Spectral Graph Theory
22. The A_α-spectral radius of complements of bicyclic and tricyclic graphs with n vertices
23. Graphs with the second signless Laplacian eigenvalue ≤ 4
24. Eccentricity energy change of complete multipartite graphs due to edge deletion
25. The minimum number of multiplicity 1 eigenvalues among real symmetric matrices whose graph is a nonlinear tree
26. Star complements for ±2 in signed graphs
27. Steiner distance matrix of caterpillar graphs
28. Laplacian spectrum of comaximal graph of the ring ℤ_n
29. The signless Laplacian matrix of hypergraphs
30. On cospectrality of gain graphs
31. Regularity-based spectral clustering and mapping the Fiedler-carpet
32. Energy of a digraph with respect to a VDB topological index