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Number field

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Summary

A finite field extension of the rational numbers.

Record metadata

Carrier(s)

Data

Axioms / constraints

Concept sources

Incoming relations (arrows to this concept)

Each relation below ends at this concept.

FieldNumber field

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

Authored explanation

Require characteristic zero and finite dimension over the canonically embedded prime field Q\mathbb{Q}.

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

Outgoing relations (arrows from this concept)

Each relation below starts at this concept.

Number fieldPlace of a number field

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

Authored explanation

A number field has Archimedean places from embeddings and non-Archimedean places associated with prime ideals, understood as equivalence classes of absolute values.

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

Number fieldRing of integers

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

Authored explanation

Select the elements integral over Z\mathbb{Z}; they form the ring of integers.

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