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.
Geranium essential oil information. Our geranium essential oil is extracted from the plant Pelargonium odorantissimum, of the Geraniaceae family and is extracted from a different plant than its cousin rose geranium essential oil-as this more expensive oil is extracted from Pelargonium graveolens.rigin of geranium oil. The plants originated from South Africa, as well as Reunion, Madagascar, Egypt and Morocco and were introduced to European countries such as Italy, Spain and France in the 17th century.