Graffiti scratch glass and other hard surfaces, such as permanent marking pens and markers or paint sticks; evidence of membership or affiliation with any gang or tagging crew, paraphernalia to include any reference to "(tagger's name)," and any drawings, writings, objects, or graffiti depicting taggers' names, initials, logos, monikers, slogans, or mention of tagging crew membership; any newspaper clippings relating details of or referring to any graffiti crime. Graffiti Graffiti (both singular and plural; the singular "graffito" is very rare in English except in archeology) is writing or drawings made on a wall or other surface, usually without permission and within
Singular point of a curve smooth function "h" so that the curve has the form "y"="h"("x") near the origin. Similarly, if "b"≠0 then there is a smooth function "k" so that the curve has the form "x"="k"("y") near the origin. In either case, there is a smooth map from R to the plane which defines the curve in the neighborhood of the origin. Note that at the origin so the curve is non-singular or "regular" at the origin if at least one of the partial derivatives of "f" is non-zero. The singular points are those points on the curve where both partial derivatives vanish, Assume