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.
Ellia Geranium Essential Oil. Geranium essential oil is encouraging, uplifting, delicate, and floral. Diffuse it to inspire a positive mood, or mix it with a carrier oil for topical application. Geranium also mixes beautifully with other essential oils, including lavender, grapefruit, and patchouli. Get creative and make your own blend! Shop Now