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Canonical static concept record

Set

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Summary

A collection regarded as a single mathematical object.

Record metadata

Carrier(s)

Concept sources

Incoming relations (arrows to this concept)

Each relation below ends at this concept.

No direct relations are authored in this direction.

Outgoing relations (arrows from this concept)

Each relation below starts at this concept.

SetBinary relation

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Choose a target set YY and a subset RX×YR\subseteq X\times Y. Endorelations are the specialization Y=XY=X.

How to interpret this relation type

Equip an existing carrier or structured object with additional chosen data, when such compatible data exists. Use a construction junction when several independently meaningful inputs must coexist on the same carrier or interact compatibly.

Relation sources

SetCountable set

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Restrict to finite or countably infinite sets.

How to interpret this relation type

Keep the existing data and select the subclass satisfying an additional law, existence condition, finiteness condition, or other property.

Relation sources

SetQuiver / directed multigraph

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Use sets of vertices and arrows with source and target maps.

How to interpret this relation type

Equip an existing carrier or structured object with additional chosen data, when such compatible data exists. Use a construction junction when several independently meaningful inputs must coexist on the same carrier or interact compatibly.

Relation sources

SetEmpty set

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Select the unique set having no elements.

How to interpret this relation type

Keep the existing data and select the subclass satisfying an additional law, existence condition, finiteness condition, or other property.

Relation sources

SetFinite set

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Restrict to sets with finitely many elements.

How to interpret this relation type

Keep the existing data and select the subclass satisfying an additional law, existence condition, finiteness condition, or other property.

Relation sources

SetFirst-order signature

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Choose sets of function, relation, and constant symbols with arity assignments.

How to interpret this relation type

Equip an existing carrier or structured object with additional chosen data, when such compatible data exists. Use a construction junction when several independently meaningful inputs must coexist on the same carrier or interact compatibly.

Relation sources

SetHypergraph

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Choose a family of hyperedges, each a subset of vertices.

How to interpret this relation type

Equip an existing carrier or structured object with additional chosen data, when such compatible data exists. Use a construction junction when several independently meaningful inputs must coexist on the same carrier or interact compatibly.

Relation sources

Setobjects + monoidal base(construction junction)

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Supply the collection of objects (set-sized in this atlas presentation).

How to interpret this relation type

Feed several structures into a construction junction and impose compatibility between them.

Relation sources

Setsignature + carrier(construction junction)

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Use a nonempty carrier set.

How to interpret this relation type

Feed several structures into a construction junction and impose compatibility between them.

Relation sources

Setgroup + carrier action(construction junction)

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Supply the Set structure as one jointly required input.

How to interpret this relation type

Feed several structures into a construction junction and impose compatibility between them.

Relation sources

Setsignature + carrier operations(construction junction)

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Supply the common carrier on which all operations are interpreted.

How to interpret this relation type

Feed several structures into a construction junction and impose compatibility between them.

Relation sources

SetMagma

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Choose a closed operation M×MMM\times M\to M.

How to interpret this relation type

Equip an existing carrier or structured object with additional chosen data, when such compatible data exists. Use a construction junction when several independently meaningful inputs must coexist on the same carrier or interact compatibly.

Relation sources

SetMatroid

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Add independent subsets satisfying hereditary and exchange axioms.

How to interpret this relation type

Equip an existing carrier or structured object with additional chosen data, when such compatible data exists. Use a construction junction when several independently meaningful inputs must coexist on the same carrier or interact compatibly.

Relation sources

SetMeasurable space

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Choose measurable subsets.

How to interpret this relation type

Equip an existing carrier or structured object with additional chosen data, when such compatible data exists. Use a construction junction when several independently meaningful inputs must coexist on the same carrier or interact compatibly.

Relation sources

SetPointed set

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Choose one distinguished element of the set.

How to interpret this relation type

Equip an existing carrier or structured object with additional chosen data, when such compatible data exists. Use a construction junction when several independently meaningful inputs must coexist on the same carrier or interact compatibly.

Relation sources

SetPower set

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Send XX to P(X)\mathcal P(X), the set of all subsets of XX.

How to interpret this relation type

Apply a standard functorial or canonical construction whose output is not merely a reduct of the input and is not generally an equivalent presentation of the same object.

Relation sources

SetPseudometric space

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Choose a distance-like function.

How to interpret this relation type

Equip an existing carrier or structured object with additional chosen data, when such compatible data exists. Use a construction junction when several independently meaningful inputs must coexist on the same carrier or interact compatibly.

Relation sources

SetSuccessor structure

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Choose a distinguished element 0 and a unary map S:NNS:N\to N.

How to interpret this relation type

Equip an existing carrier or structured object with additional chosen data, when such compatible data exists. Use a construction junction when several independently meaningful inputs must coexist on the same carrier or interact compatibly.

Relation sources

SetTopological space

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Choose open subsets satisfying the topology axioms.

How to interpret this relation type

Equip an existing carrier or structured object with additional chosen data, when such compatible data exists. Use a construction junction when several independently meaningful inputs must coexist on the same carrier or interact compatibly.

Relation sources

SetTransitive set

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Require every element of an element of XX to lie in XX.

How to interpret this relation type

Keep the existing data and select the subclass satisfying an additional law, existence condition, finiteness condition, or other property.

Relation sources

SetUndirected multigraph

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Add a collection of edges with endpoints in the vertex set.

How to interpret this relation type

Equip an existing carrier or structured object with additional chosen data, when such compatible data exists. Use a construction junction when several independently meaningful inputs must coexist on the same carrier or interact compatibly.

Relation sources

SetUniform space

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Choose entourages satisfying the uniformity axioms.

How to interpret this relation type

Equip an existing carrier or structured object with additional chosen data, when such compatible data exists. Use a construction junction when several independently meaningful inputs must coexist on the same carrier or interact compatibly.

Relation sources