👉 In mathematics, a codifier is a mathematical object that represents a function or relation. For example, in linear algebra, a codimension 1 vector space is a set of vectors with a single linearly independent subset. In topology, a codimension 1 open set is a set of points whose closure contains all the points in that set. In graph theory, a codimension 1 clique is a set of vertices whose union forms a complete bipartite graph.