graph(Noun) An ordered pair , where is a set of elements called vertices (or nodes) and is a set of pairs of elements of , called edges; informally, a set of vertices together with a set edges that join these vertices.
Clubbing is an enlargement of the ends of the fingers and a downward sloping of the nails. Although it's not caused by chronic obstructive pulmonary disease (COPD), it can be a sign of coexisting lung cancer or other lung disorders in patients with COPD. Clubbing is sometimes called digital clubbing. It can affect the fingers and/or toes.
The following medical conditions are some of the possible causes of Clubbed fingers. There are likely to be other possible causes, so ask your doctor about your symptoms. 1  Bronchial carcinoma. 2  Cyanotic congenital heart disease (see Cyanosis)  Infective endocarditis.