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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.

  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. 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).

  5. Base and superstructure - Wikipedia

    en.wikipedia.org/wiki/Base_and_superstructure

    The superstructure refers to society's other relationships and ideas not directly relating to production including its culture, institutions, roles, rituals, religion, media, and state. The relation of the two parts is not strictly unidirectional. The superstructure can affect the base. However, the influence of the base is predominant.

  6. Substructure - Wikipedia

    en.wikipedia.org/wiki/Substructure

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

  7. Dynamic substructuring - Wikipedia

    en.wikipedia.org/wiki/Dynamic_substructuring

    Substructure models of different development groups can be shared and combined without exposing the modelling details. Dynamic substructuring is particularly tailored to simulation of mechanical vibrations , which has implications for many product aspects such as sound / acoustics , fatigue / durability, comfort and safety .

  8. Structure (mathematical logic) - Wikipedia

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

    The notion in abstract algebra that corresponds to a substructure of a field, in this signature, is that of a subring, rather than that of a subfield. The most obvious way to define a graph is a structure with a signature σ {\displaystyle \sigma } consisting of a single binary relation symbol E . {\displaystyle E.}

  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 ...