Alphabeta Math
CorollaryStatement: Literature-sourcedProof: AI-adaptedSession-authored (Fable 5 assisted)precheck passjudge pass (gpt-5.6-terra)audited 2026-08-27
How statement and proof provenance work

The first chip identifies the source of the statement or construction; the second identifies the source of its local proof or verification.

  • Literature-sourced: the exact statement appears in a cited source; only wording and notation differ.
  • AI-adapted: a semantically identical restatement of literature-sourced material, modulo indexing, notation, and boundary cases adopted by the library.
  • AI-generated: a genuinely novel statement formulated by AI, with no source for the claim itself.

These labels describe origin, not correctness: citations and verification chips remain separate evidence.

The complex numbers form an algebraic closure of R

Statement

The field extension C/R is an algebraic closure of R.

Facts & Assumptions

Given: The field extension C/R.

[L1]

The field C is algebraically closed (The complex numbers are algebraically closed).

[L2]

The complex field is a simple algebraic extension of R of degree 2 (C/R has power basis 1,i and degree 2).

[L3]

An algebraic closure of a field is an algebraic extension whose top field is algebraically closed (An algebraic closure of a field).

Proof

technique · direct
1.1

Fact [L1] gives the algebraically closed part of the definition in [L3].

L1
1.2

Fact [L2] gives the algebraic-extension part of the definition in [L3].

L2
2.1

Therefore [L3] makes C/R an algebraic closure of R.

L3step 1.1step 1.2

Depends on

Used by

Nothing in the library uses this result yet.

Dependency tree · two levels

25 results within two dependency steps of this one, each drawn at its shortest distance from it. An arrow runs from a result to what uses it, so the chart reads left to right and ends at this result, which carries a heavier outline. Every node is a link to that result. Click elsewhere on the chart to enlarge it.

Sources