color has the ability to inspire, excite, soothe, heal and even agitate. This is particularly true for children, who can be extra sensitive to color's impact. So the importance of picking out just the right color for a young child's room shouldn't be underestimated. When choosing colors to use for your rooms home it's important to think about the mood you want to create and whether you want it ...

A star edge coloring of a graph is proper with no $2$-colored path or cycle length four. The chromatic index $\chi'_{st}(G)$ $G$ the minimum number $t$ for which has colors. We prove upper bounds complete bipartite graphs; in particular we obtain tight case when one part size at most $3$. also consider graphs where all vertices have maximum degree $2$ and other $b$. Let $k$ be an integer ($k\ge...

Object color space is highly structured due to optical constraints (radiant power non-negative, reflectance factors between zero and unity) ecological context (daylight illuminant). In this setting trichromacy induces a natural geometry through unique spectral tripartition. Different from null-context colorimetry, one gains two desirable relations: The colorimetric coordinates are coarse-graine...