Results 41 to 50 of about 7,403 (166)
Interference, reduced action, and trajectories [PDF]
Instead of investigating the interference between two stationary, rectilinear wave functions in a trajectory representation by examining the two rectilinear wave functions individually, we examine a dichromatic wave function that is synthesized from the ...
A. Bouda +44 more
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The A spectral moments of digraphs with a given dichromatic number
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Xiuwen Yang, Hajo Broersma, Ligong Wang
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Fruit scent and observer colour vision shape food-selection strategies in wild capuchin monkeys [PDF]
The senses play critical roles in helping animals evaluate foods, including fruits that can change both in colour and scent during ripening to attract frugivores.
Endo, Mizuki +9 more
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Chromatic roots are dense in the whole complex plane [PDF]
I show that the zeros of the chromatic polynomials P_G(q) for the generalized theta graphs \Theta^{(s,p)} are, taken together, dense in the whole complex plane with the possible exception of the disc |q-1| < 1.
Sokal, Alan D.
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The retina is sensitive to age-dependent degeneration. To find suitable animal models to understand and map this process has particular importance. The degu (Octodon degus) is a diurnal rodent with dichromatic color vision.
Krisztina eSzabadfi +9 more
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Tutte's dichromate for signed graphs
We introduce the ``trivariate Tutte polynomial" of a signed graph as an invariant of signed graphs up to vertex switching that contains among its evaluations the number of proper colorings and the number of nowhere-zero flows.
Goodall, Andrew +3 more
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Acyclic edge coloring of graphs [PDF]
An {\em acyclic edge coloring} of a graph $G$ is a proper edge coloring such that the subgraph induced by any two color classes is a linear forest (an acyclic graph with maximum degree at most two). The {\em acyclic chromatic index} $\chiup_{a}'(G)$ of a
Wang, Tao, Zhang, Yaqiong
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Background Recent large-scale whole genome sequencing efforts in birds have elucidated broad patterns of avian phylogeny and genome evolution. However, despite the great interest in economically important phasianids like Gallus gallus (Red Junglefowl ...
G. P. Tiley +3 more
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Dichromatic polynomials and Potts models summed over rooted maps
We consider the sum of dichromatic polynomials over non-separable rooted planar maps, an interesting special case of which is the enumeration of such maps. We present some known results and derive new ones.
Arakaki +31 more
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Cuts in matchings of 3-connected cubic graphs [PDF]
We discuss conjectures on Hamiltonicity in cubic graphs (Tait, Barnette, Tutte), on the dichromatic number of planar oriented graphs (Neumann-Lara), and on even graphs in digraphs whose contraction is strongly connected (Hochst\"attler). We show that all
Knauer, Kolja, Valicov, Petru
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