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.
Decora Imperial or Balcon Red is one of the most widely grown geraniums in the UK and Europe-if you've seen a chalet or villa with bright red geraniums tumbling down from window boxes, chances are it's this one!ot up pelargonium plants and grow them on in warm frost-free conditions. When all risk of frost has passed, gradually acclimatise geraniums to outdoor conditions over a period of 7 to 10 days before transplanting them into their final positions in containers, baskets or window boxes.