Results 81 to 90 of about 33,403 (178)
A commutative noncommutative fractal geometry
, 2011 In this thesis examples of spectral triples, which represent fractal sets, are examined and new insights into their noncommutative geometries are obtained.
Samuel, Tony; id_orcid, Samuel, Anthony
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Accretion Geometry of the New Galactic Black Hole Candidate AT2019wey in the Hard State
The Astrophysical JournalWe perform broadband spectral and timing studies of the Galactic low-mass black hole candidate AT2019wey using quasi-simultaneous NICER, Swift, and NuSTAR observations obtained in 2022.
Pragati Sahu +5 more
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, 2018 The \emph{distance matrix} of a simple connected graph $G$ is $D(G)=(d_{ij})$, where $d_{ij}$ is the distance between the $i$th and $j$th vertices of $G$. The \emph{distance signless Laplacian matrix} of the graph $G$ is $D_Q(G)=D(G)+Tr(G)$, where $Tr(G)$
Panigrahi, Pratima, Atik, Fouzul
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EnergiesThere is a strong demand for buried sensor networks in industries including mining, agriculture, geothermal energy, and oil/gas. However, the integration of these sensors is bottle-necked by the need for electric power which cannot be delivered by ...
Olivia E. Nnadi +4 more
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Let D(G) be the distance matrix of a strongly connected digraph G, Tr(G) be the diagonal matrix with vertex transmissions of G as diagonal entries. The generalized distance matrix Dβ(G) of the strongly connected digraph G is defined as Dβ(G) = βTr(G)+(1 ...
Zengzhao Xu, Weige Xi
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AIP AdvancesWe propose a novel Schell model source for generating twisted partially coherent beams with an initial radius of curvature, which is called a twisted flat-topped cosine Gaussian Schell-model (TFCGSM) source.
Shaohua Zhang +3 more
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IEEE Photonics JournalThe interaction of light with micro-scale dielectric structures has garnered significant attention in recent years due to its potential applications in various fields ranging from photonics to biomedical imaging.
Shadi A. Alboon +2 more
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Distance spectral conditions for $ID$-factor-critical and fractional $[a, b]$-factor of graphs
, 2023 Let $G=(V(G), E(G))$ be a graph with vertex set $V(G)$ and edge set $E(G)$. A graph is $ID$-factor-critical if for every independent set $I$ of $G$ whose size has the same parity as $|V(G)|$, $G-I$ has a perfect matching.
Wang, Ligong, Ma, Tingyan
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The Astrophysical Journal LettersSurvey strategies for upcoming exoplanet direct imaging missions have considered varying assumptions of prior knowledge. Precursor radial velocity surveys could have detected nearby exo-Earths and provided prior orbit and mass constraints. Alternatively,
Arnaud Salvador +3 more
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On the distance spectral radius, fractional matching and factors of graphs with given minimum degree
A fractional matching of G is a function f : E(G) → [0, 1] such that ∑e∈EG(vi) f(e) ≤ 1 for any vi ∈ V (G), where EG(vi) = {e : e ∈ E(G) and e is incident with vi}.
Zengzhao Xu, Ligong Wang, Weige Xi
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