direct product
121Tensor product of graphs — In graph theory, the tensor product G × H of graphs G and H is a graph such that * the vertex set of G × H is the Cartesian product V(G) × V(H) ; and * any two vertices (u,u ) and (v,v ) are adjacent in G × H if and only if u is adjacent with v… …
122Tensor product of modules — In mathematics, the tensor product of modules is a construction that allows arguments about bilinear maps (roughly speaking, multiplication ) to be carried out in terms of linear maps (module homomorphisms). The module construction is analogous… …
123Reduced product — In model theory, a branch of mathematical logic, the reduced product is a construction that generalizes both direct product and ultraproduct.A reduced product of a family of objects is the direct product of the family modulo a filter. The filter… …
124Central product — In mathematics, especially in the field of group theory, the central product is way of producing a group from two smaller groups. The central product is similar to the direct product, but in the central product two isomorphic central subgroups of …
125Kronecker product — In mathematics, the Kronecker product, denoted by otimes, is an operation on two matrices of arbitrary size resulting in a block matrix. It is a special case of a tensor product. The Kronecker product should not be confused with the usual matrix… …
126Free product — In abstract algebra, the free product of groups constructs a group from two or more given ones. Given, for example, groups G and H , the free product G*H can be constructed as follows: given presentations of G and of H , take the generators of G… …
127First direct — Infobox Company company name = first direct company company type = Division of HSBC Bank plc foundation = 1989 location = Leeds, West Yorkshire, England industry = Banking Insurance products = Credit card, Loans, Savings, Mortgages homepage =… …
128ScreenShot Direct — Infobox Software name = ScreenShot Direct caption = ScreenShot Direct s Options Window location = Madison, Connecticut developer = Shoreline Software Development latest stable version = 1.5 latest release date = May 15, 2006 operating system =… …
