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The nullity of a graph $G$ is the multiplicity of zero as an eigenvalue in the spectrum of its adjacency matrix. From the interlacing theorem, derived from Cauchy’s inequalities for matrices, a vertex of a graph can be a core vertex if, on deleting the vertex, the nullity decreases, or a Fiedler vertex, otherwise. We adopt a graph theoretical approach to determine conditions required for the identification of a pair of prescribed types of root vertices of two graphs to form a cut-vertex of unique...

Coefficients of ergodicity generated by non-symmetrical vector norms

Antonín Lešanovský (1990)

Czechoslovak Mathematical Journal

Cohomologie de la grassmannienne à valeurs dans les puissances extérieures et symétriques du fibré universel.

J. le Potier (1977)

Mathematische Annalen

Collars in PSL $(2, 𝐇)$ .

Kellerhals, Ruth (2001)

Annales Academiae Scientiarum Fennicae. Mathematica

Colorings and orientations of matrices and graphs.

Schauz, Uwe (2006)

The Electronic Journal of Combinatorics [electronic only]

Combinatorial aspects of generalized complementary basic matrices

Miroslav Fiedler, Frank Hall (2013)

Open Mathematics

This paper extends some properties of the generalized complementary basic matrices, in particular, in a combinatorial direction. These include inheritance (such as for Alternating Sign Matrices), spectral, and sign pattern matrix (including sign nonsingularity) properties.

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Clifford and Grassmann like algebra

Clifford fibrations and possible kinematics.

Clifford k-algebras and k*-groups.

Cliffordalgebren und neue isoparametrische Hyperflächen.

Closed form solutions of coupled algebraic and differential matrix equations

Closures of Conjugacy Classes of Matrices are Normal.

CLT for linear spectral statistics of Wigner matrices.

Coalescing Fiedler and core vertices

Coefficients of ergodicity generated by non-symmetrical vector norms

Cohomologie de la grassmannienne à valeurs dans les puissances extérieures et symétriques du fibré universel.

Collars in PSL $(2, 𝐇)$ .

Colorings and orientations of matrices and graphs.

Combinatorial aspects of generalized complementary basic matrices

Combinatorial identities deriving from the $n$ th power of a $2 \times 2$ matrix.

Combinatorial properties of Fourier-Motzkin elimination.

Combined preorder and postorder traversal algorithm for the analysis of singular systems by Haar wavelets.

Common multiples of operator polynomials with analytic coefficients.

Common solutions of a pair of matrix equations.

Commutative and noncommutative invariant theory

Commutative weak generalized inverses of a square matrix and some related matrix equations.

Currently displaying 61 – 80 of 168