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.
Centerless implies semisimple
Statement refuted
A centerless finite-dimensional Lie algebra is semisimple.
Facts & Assumptions
Given: A characteristic-zero field and the displayed affine algebra.
Semisimplicity means vanishing solvable radical (Simple, semisimple, and reductive Lie algebras).
Counterexample
Over any field, let have basis and bracket . For , the equations and give . Thus .
Its derived algebra is and the next derived algebra is zero, so is nonzero and solvable. Therefore its radical is all of , not zero, and it is not semisimple by [L1]. This explicit witness has dimension two and refutes the implication even in characteristic zero.
Depends on
Used by
- Centerless does not imply semisimple Counterexample
Dependency tree · two levels
4 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
- Milne, Lie Algebras, §§3–4 (standard reference, not scraped)