Results 11 to 20 of about 7,337 (162)
DICHROMATIC NUMBER AND FRACTIONAL CHROMATIC NUMBER [PDF]
Forum of Mathematics, Sigma, 2016 The dichromatic number of a graph $G$ is the maximum integer $k$
BOJAN MOHAR, HEHUI WU
doaj +2 more sources
The Dichromatic Number of Infinite Families of Circulant Tournaments
Discussiones Mathematicae Graph Theory, 2017 The dichromatic number dc(D) of a digraph D is defined to be the minimum number of colors such that the vertices of D can be colored in such a way that every chromatic class induces an acyclic subdigraph in D.
Javier Nahid, Llano Bernardo
doaj +2 more sources
Horticulturae, 2023 Tomatoes are an important fruit consumed worldwide. Within protected cultivation environments, artificial light using energy-efficient light-emitting diodes can be applied in tomato production as an effective way to improve productivity and nutritional ...
Su Hyeon Lee +4 more
doaj +1 more source
Plants, 2023 For indoor crop production, blue + red light-emitting diodes (LEDs) have high photosynthetic efficacy but create pink or purple hues unsuitable for workers to inspect crops.
Qingwu Meng, Erik S. Runkle
doaj +1 more source
Problems of Information Support for Social Assistance to the Population During the COVID-19 Pandemic
Социологическая наука и социальная практика, 2021 The article deals with the actual problems of providing targeted social assistance to the population during the economic crisis. The research subject is a set of measures to stabilize the income of the population, implemented by the Government of the ...
Alexander S. Abroskin +1 more
doaj +1 more source
The topography of rods, cones and intrinsically photosensitive retinal ganglion cells in the retinas of a nocturnal (Micaelamys namaquensis) and a diurnal (Rhabdomys pumilio) rodent. [PDF]
PLoS ONE, 2018 We used immunocytochemistry to determine the presence and topographical density distributions of rods, cones, and intrinsically photosensitive retinal ganglion cells (ipRGCs) in the four-striped field mouse (Rhabdomys pumilio) and the Namaqua rock mouse (
Ingrid van der Merwe +5 more
doaj +1 more source
A semi-strong perfect digraph theorem
AKCE International Journal of Graphs and Combinatorics, 2020 Reed (1987) showed that, if two graphs are P4-isomorphic, then either both are perfect or none of them is. In this note, we will derive an analogous result for perfect digraphs.
Stephan Dominique Andres +3 more
doaj +1 more source
A Victorian Age Proof of the Four Color Theorem [PDF]
, 2010 In this paper we have investigated some old issues concerning four color map problem. We have given a general method for constructing counter-examples to Kempe's proof of the four color theorem and then show that all counterexamples can be rule out by re-
Cahit, I.
core +1 more source
Joint scaling limit of site percolation on random triangulations in the metric and peanosphere sense
, 2021 Recent works have shown that random triangulations decorated by critical ($p=1/2$) Bernoulli site percolation converge in the scaling limit to a $\sqrt{8/3}$-Liouville quantum gravity (LQG) surface (equivalently, a Brownian surface) decorated by SLE$_6 ...
Gwynne, Ewain, Holden, Nina, Sun, Xin
core +1 more source
Interference, reduced action, and trajectories [PDF]
, 2006 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
core +5 more sources