Results 11 to 20 of about 6,300 (231)
Circular coloring and fractional coloring in planar graphs [PDF]
Journal of Graph Theory, 2021 AbstractWe study the following Steinberg‐type problem on circular coloring: for an odd integer , what is the smallest number such that every planar graph of girth without cycles of length from to admits a homomorphism to the odd cycle (or equivalently, is circular ‐colorable).
Xiaolan Hu, Jiaao Li
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Colorings of (r, r)-Uniform, Complete, Circular, Mixed Hypergraphs
Mathematics, 2021 In colorings of some block designs, the vertices of blocks can be thought of as hyperedges of a hypergraph H that can be placed on a circle and colored according to some rules that are related to colorings of circular mixed hypergraphs.
Nicholas Newman, Vitaly Voloshin
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Analytical study of visual features and structural elements of the circular motif in a painting known as Shams of the late Qajar period preserved in the Astan Quds Razavi Museum [PDF]
نگره, 2020 The Qajar period is one of the brightest periods in painting, and religious painting is one of its branches. Some of these paintings have been made for the king in high quality and on silk canvases.
Elaheh Panjehbashi
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Analytical Study of the Structures of the Khamsa of Nizami's Figures of 909 AH in Bodleian Library [PDF]
نگره, 2023 Literature and art of each nation are among fundamental bases of its culture. Epic, lyrical, didactic, religious and mystical literature are among the most widely used themes in art that have become the sources of creating lasting works and the richness ...
marziye Ghafouri, Seyed Reza Hoseini
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Reflection of Women’s Portraits in Pictorial Carpets of Qajar Era [PDF]
نگره, 2023 Social researchers believe that since the production, distribution, and consumption of works of art occur by humans in the social contexts, they cannot be immune to the impacts of social variables; you can see the latent and visible traces of social ...
Abdollah Mirzaei, Fateme Bagherizadeh
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Opto-Electronic Advances, 2021 Inhomogeneity and low efficiency are two important factors that limit the application of laser-induced periodic surface structures (LIPSSs), especially on glass surfaces.
Long Chen +7 more
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Theory and Applications of Graphs, 2022 Given an edge-colored complete graph Kn on n vertices, a perfect (respectively, near-perfect) matching M in Kn with an even (respectively, odd) number of vertices is rainbow if all edges have distinct colors.
Shuhei Saitoh, Naoki Matsumoto, Wei Wu
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Circular coloring of signed graphs [PDF]
Journal of Graph Theory, 2017 AbstractLet ( be two positive integers. We generalize the well‐studied notions of ‐colorings and of the circular chromatic number to signed graphs. This implies a new notion of colorings of signed graphs, and the corresponding chromatic number χ. Some basic facts on circular colorings of signed graphs and on the circular chromatic number are proved ...
Ying-li Kang, Eckhard Steffen
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Crocus sativus L. Petal Extract Inhibits Inflammation and Osteoclastogenesis in RAW 264.7 Cell Model
Pharmaceutics, 2022 The dried stigmas of Crocus sativus L. (Iridaceae) are traditionally processed to produce saffron, a spice widely used as a food coloring and flavoring agent, which is important in the pharmaceutical and textile dye-producing industries.
Ciriana Orabona +7 more
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Edge colorings and circular flows on regular graphs [PDF]
Journal of Graph Theory, 2021 AbstractLet be the circular flow number of a bridgeless graph . By Steffen it was proved that, for a bridgeless ‐regular graph , where is a positive integer, if and only if has a perfect matching such that is bipartite. This implies that is a class 1 graph. For , all graphs with circular flow number bigger than 4 are class 2 graphs. We show that,
Davide Mattiolo, Eckhard Steffen
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