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.
Along with zonal geraniums, there are 3 more types of Pelargonium: 1  Ivy-Leaf Geranium (Pelargonium peltatum) â As their name implies, these geraniums have a trailing habit and ivy-shaped leaves. 2  The flowers are smaller and less showy than zonal geraniums and the plants are often used as spillers in containers.