Graphs are one of the objects of study in discrete mathematics. The edges may be directed or undirected. For example, if the vertices represent people at a party, and there is an edge between two people if they shake hands, then this is an undirected graph, because if person A shook hands with person B, then person B also shook hands with person A.
About. 1  Jake T. Austin is a 22 year old American Actor. Born Jake Austin Szymanski on 3rd December, 1994 in New York City, New York, USA, he is famous for Wizards Of Waverly Place. His zodiac sign is Sagittarius.
Jake the Golden Retriever at 8 years old. Two Golden Retriever brothers on a nice sit-stay in their backyard, looking pretty for the cameraâon the left is Little Du, 5 years old, and on the right is Rocky, 6 years old. Rocky is a Delta Society-registered therapy dog and visits nursing homes and hospitals.