An ordinary Petri net is a bipartite directed graph composedof places, drawn as circles, and transitions, drawn as bars. A formal denitionfollows [3]:Denition 2.1 An ordinary Petri Net (PN) is a 5-tuplePN = (P;T;I ;I + ;M 0) where:1. P = fp 1 ;p 2 ;:::;p n gis a nite and non-empty set of places,2.
The Colors of Geraniums. Geraniums come in a host of colors, from the traditional white, red and pink to the more exotic orange and purple. Geraniums (Pelargonium spp.) are popular garden favorites that can be cultivated throughout all the USDA hardiness zones as annuals or year-round as indoor plants.
Growth and Size. Seed geraniums are a compact version of the zonal geranium, but with smaller bloom heads, which typically measure 3 to 4 inches. Seed geraniums form a low, compact mound that is less than 1 foot tall and wide.Zonal geraniums tend to grow more upright, growing to about 18 inches in one season with large, 4- to 6-inch flower heads. Seed geraniums tend to have more numerous flowers and a more self-branching growth habit.hichever type you choose, geraniums add color to your garden. What's commonly called a geranium comes from the Pelargonium genus, which includes several species of plants, which are categorized into different types based on growth habits and propagation.