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 homology are sometimes applied (particularly by authors writing on algebraic geometry) to the singular theory, as giving rise to the Betti numbers of the most familiar spaces such as simplicial complexes and closed manifolds. If one defines a homology theory axiomatically (via the Eilenberg–Steenrod axioms), and then relaxes one of the axioms (the "dimension axiom"), one obtains a generalized theory, called an extraordinary homology theory. These originally arose in the form of extraordinary cohomology theories, namely K-theory and cobordism theory. In this context, singular homology is referred to as ordinary homology. Singular homology In algebraic topology, a branch of mathematics, singular