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 oils for skin can also get rid of dark spots on face, or scars, and can help the melanin pigment spread more evenly, to give the skin a more balanced hue. Lavender Oil. Lavender essential oils for skin care are another viable choice if youâd like to make your skin healthier. Like geranium oil, lavender oil also helps the skin retain moisture and fight dry flaky skin on face. It also helps fight acne as well as return elasticity.