a rectangle has an even number of vertices sides.
a rectangle has an even number of vertices sides.
how many vertices sides does a rectangle have?
even number
the formula_64-regular locally linear graphs must have at least formula_65 vertices, because there are this many vertices among any triangle and its neighbors alone. (no two vertices of the triangle can share a neighbor without violating local linearity.) regular graphs with exactly this many vertices are possible only when formula_66 is 1, 2, 3, or 5, and are uniquely defined for each of these four cases. the four regular graphs meeting this bound on the number of vertices are the 3-vertex 2-regular triangle formula_67, the 9-vertex 4-regular paley graph, the 15-vertex 6-regular kneser graph formula_34, and the 27-vertex 10-regular [[complement graph]] of the [[schläfli graph]]. the final 27-vertex 10-regular graph also represents the [[intersection graph]] of the 27 lines on a [[cubic surface]].
locally linear graph
scalable video multicast









































scalable video multicast is a new wireless multicast technology. in scalable video multicast, the video program subscribers can view the program in accordence with their link conditions. the scalable video multicast has employed by many stardands, such as mbms, mbs, dvb-h, and so forth.
scalable video multicast