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Direct sum of modules

In abstract algebra, the direct sum is a construction which combines several modules into a new, larger module. The direct sum of modules is the smallest module which contains the given modules as submodules with no "unnecessary" constraints, making it an example of a coproduct. Contrast with the direct product, which is the dual notion.

Products, Direct sum of modules with additional structure & Properties

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Direct sum of modules with additional structure

13 related topics

Properties

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Construction for an arbitrary family of modules

7 related topics

Construction for vector spaces and abelian groups

6 related topics

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Overview

Construction for vector spaces and abelian groups

Construction for an arbitrary family of modules

Properties

Universal property

Grothendieck group

Direct sum of modules with additional structure

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Direct sum of modules

Nodes61
Edges60
Triples20
Avg. degree1.97
Density0.032787
Components1

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Direct sum of modules

Top relations

related to Properties · 18
Direct sum of modules → A1, Ak, An, Bourbaki, Direct, Each, Every, Hom, If, II, In, Indeed, Mi, R-linear, R-module, The, This, With
is a · 2
Direct sum of modules → biproduct, smallest module which contains the given modules as submodules with no

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Important terminology

sum direct displaystyle modules spaces product space mi hilbert vector construction every many abelian left set banach one finite functions

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Direct sum of modulesis asmallest module which contains the given modules as submodules with no0.90text
Direct sum of modulesis abiproduct0.90text
Direct sum of modulesrelated to PropertiesThe0.60section
Direct sum of modulesrelated to PropertiesMi0.60section
Direct sum of modulesrelated to PropertiesBourbaki0.60section
Direct sum of modulesrelated to PropertiesII0.60section
Direct sum of modulesrelated to PropertiesIf0.60section
Direct sum of modulesrelated to PropertiesEach0.60section
Direct sum of modulesrelated to PropertiesWith0.60section
Direct sum of modulesrelated to PropertiesEvery0.60section
Direct sum of modulesrelated to PropertiesThis0.60section
Direct sum of modulesrelated to PropertiesR-module0.60section

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