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.
White spots or dots on your nails are common. Several issues can cause them. These possible causes include: allergic reaction; fungal infection; nail injury; mineral deficiency; Allergic reaction. An allergy to a nail polish, gloss, hardener, or nail polish remover may cause white spots on your nails. The use of acrylic or gel nails can also badly damage your nails and may cause these white spots. Fungi. A common nail fungus called white superficial onychomycosis can appear on the toenails.