Results 11 to 20 of about 27,993 (181)
Foundational Reading Knowledge of Teachers of Students With IDD: Examining Experience, Degree and Time Use. [PDF]
J Intellect Disabil ResABSTRACT Background Special education teachers require foundational reading content knowledge (e.g., phonemic awareness, phonics) to teach early reading skills. Though many measures have been developed to measure such knowledge, none have examined item‐level differences related to teacher characteristics (i.e., experience, degree and instructional time
Lindström ER +3 more
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Some results on the existence of Hamiltonian cycles in -compositions of bipartite digraphs
AKCE International Journal of Graphs and Combinatorics, 2020 Let D be a digraph on n vertices s1, …, sn and let D1, …, Dn be a family of vertex-disjoint bipartite digraphs. We think of D1, …, Dn as 2-colored digraphs with the same color set.
Pilar Cano +2 more
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New Applied Problems in the Theory of Acyclic Digraphs
Mathematics, 2021 The following two optimization problems on acyclic digraph analysis are solved. The first of them consists of determining the minimum (in terms of volume) set of arcs, the removal of which from an acyclic digraph breaks all paths passing through a subset
Gurami Tsitsiashvili, Victor Bulgakov
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H-Kernels in Unions of H-Colored Quasi-Transitive Digraphs
Discussiones Mathematicae Graph Theory, 2021 Let H be a digraph (possibly with loops) and D a digraph without loops whose arcs are colored with the vertices of H (D is said to be an H-colored digraph). For an arc (x, y) of D, its color is denoted by c(x, y). A directed path W = (v0, . .
Campero-Alonzo José Manuel +1 more
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Generalized Neutrosophic Competition Graphs [PDF]
Neutrosophic Sets and Systems, 2020 The generalized neutrosophic graph is a generalization of the neutrosophic graph that represents a system perfectly. In this study, the concept of a neutrosophic digraph, generalized neutrosophic digraph and out-neighbourhood of a vertex of a ...
Kousik Das, Sovan Samanta, Kajal De
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Bounds for the skew Laplacian (skew adjacency) spectral radius of a digraph [PDF]
Transactions on Combinatorics, 2019 For a simple connected graph $G$ with $n$ vertices and $m$ edges, let $\overrightarrow{G}$ be a digraph obtained by giving an arbitrary direction to the edges of $G$.
Hilal A. Ganie
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Theoretical Computer Science, 2010 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Meister, Daniel, Telle, Jan Arne
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On some subclasses of interval catch digraphs
Electronic Journal of Graph Theory and Applications, 2022 A digraph G = (V, E) is an interval catch digraph if for each vertex v ∈ V, one can associate an interval on real line and a point within it (say (Iv, pv)) in such a way that uv ∈ E if and only if pv ∈ Iu. It was introduced by Maehara in 1984.
Sanchita Paul, Shamik Ghosh
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The non-negative spectrum of a digraph
Open Mathematics, 2020 Given the adjacency matrix A of a digraph, the eigenvalues of the matrix AAT constitute the so-called non-negative spectrum of this digraph. We investigate the relation between the structure of digraphs and their non-negative spectra and associated ...
Alomari Omar +2 more
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Proceedings of the American Mathematical Society, 2016 A majority digraph is a finite simple digraph G = ( V , → ) G=(V,\to ) such that there exist finite sets A v A_v for the vertices v ∈ V v\in V with the following property: u → v
Lai, Tri +2 more
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