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  2. Substructure (engineering) - Wikipedia

    en.wikipedia.org/wiki/Substructure_(engineering)

    Substructure (engineering) The substructure of a building transfers the load of the building to the ground and isolates it horizontally from the ground. This includes foundations and basement retaining walls. [1] It is differentiated from the superstructure. It safeguards the building against the forces of wind, uplift, soil pressure etc. It ...

  3. Substructure (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Substructure_(mathematics)

    Substructure (mathematics) In mathematical logic, an (induced) substructure or (induced) subalgebra is a structure whose domain is a subset of that of a bigger structure, and whose functions and relations are restricted to the substructure's domain. Some examples of subalgebras are subgroups, submonoids, subrings, subfields, subalgebras of ...

  4. Base and superstructure - Wikipedia

    en.wikipedia.org/wiki/Base_and_superstructure

    In Marxist theory, society consists of two parts: the base (or substructure) and superstructure. The base refers to the mode of production which includes the forces and relations of production (e.g. employer–employee work conditions, the technical division of labour, and property relations) into which people enter to produce the necessities and amenities of life. The superstructure refers to ...

  5. Substructure - Wikipedia

    en.wikipedia.org/wiki/Substructure

    Look up substructure in Wiktionary, the free dictionary. Substructure may refer to: Substructure (engineering) Substructure (mathematics) Substructure (marxist theory) Category: Disambiguation pages.

  6. Optimal substructure - Wikipedia

    en.wikipedia.org/wiki/Optimal_substructure

    Definition. A slightly more formal definition of optimal substructure can be given. Let a "problem" be a collection of "alternatives", and let each alternative have an associated cost, c (a). The task is to find a set of alternatives that minimizes c (a).

  7. Structure (mathematical logic) - Wikipedia

    en.wikipedia.org/wiki/Structure_(mathematical_logic)

    The most obvious way to define a graph is a structure with a signature consisting of a single binary relation symbol The vertices of the graph form the domain of the structure, and for two vertices and means that and are connected by an edge. In this encoding, the notion of induced substructure is more restrictive than the notion of subgraph.

  8. Dynamic substructuring - Wikipedia

    en.wikipedia.org/wiki/Dynamic_substructuring

    Dynamic Substructuring (DS) is an engineering tool used to model and analyse the dynamics of mechanical systems by means of its components or substructures. Using the dynamic substructuring approach one is able to analyse the dynamic behaviour of substructures separately and to later on calculate the assembled dynamics using coupling procedures.

  9. Elementary equivalence - Wikipedia

    en.wikipedia.org/wiki/Elementary_equivalence

    Elementary equivalence. In model theory, a branch of mathematical logic, two structures M and N of the same signature σ are called elementarily equivalent if they satisfy the same first-order σ -sentences. If N is a substructure of M, one often needs a stronger condition. In this case N is called an elementary substructure of M if every first ...