Field Theory — Fields & Extensions

Mathematics Abstract Algebra Cite
Primary: Galois, Dedekind, Artin
Publication: Field extensions
Year: 19th c.
URL: Wikipedia

Description

Field: commutative ring with unity where every nonzero element is a unit. Extension K/F: F subfield of K. Degree [K:F]. Finite extension, algebraic extension, transcendental element.

Dependency Flowchart

Note: Arrows mean "depends on".

graph TD D1["Def: Field\ncomm ring, K* group"] D2["Def: Extension K/F\nF subfield of K"] D3["Def: Degree [K:F]\ndim_F K"] D4["Def: Algebraic α\nroot of poly over F"] D5["Def: Transcendental\nnot algebraic"] T1["Thm: Tower law\n[K:F]=[K:E][E:F]"] T2["Thm: F(α) ≅ F[x]/m_α\nm_α min poly"] D1 --> D2 D2 --> D3 D2 --> D4 D4 --> D5 D3 --> T1 D4 --> T2 classDef definition fill:#b197fc,color:#fff,stroke:#9775fa classDef theorem fill:#51cf66,color:#fff,stroke:#40c057 class D1,D2,D3,D4,D5 definition class T1,T2 theorem

Color Scheme

Blue
Definitions
Teal
Theorems

Process Statistics

  • Nodes: 7
  • Edges: 7
  • Definitions: 5
  • Theorems: 2