magnitude.sq-error-split.record
leaf/record · drafted
Statement
The declaration Workspace.Deference.Contrib.MagnitudePrediction.sq_error_split is accepted by the Lean kernel in the repository's Lean library.
Source
projects/deference/CLAIMS.md, entry magnitude.sq-error-split (class lean-proved, status active, origin round 2026-08-11-phase-ii-prediction; answers item 21). Documentation: verification: prompts/2026-08-11-phase-ii-prediction/REPORT.md; context: prompts/2026-08-11-phase-ii-prediction/REPORT.md. The signature of Workspace.Deference.Contrib.MagnitudePrediction.sq_error_split (theorem) in lean/Workspace/Deference/Contrib/MagnitudePrediction.lean, verbatim, binders included (ruling F1, 2026-10-23: the hypotheses are unread, and this text is what a reader files them from):
(y p : ℝ) (hy : y y = y) : (y - p) ^ 2 = (1 - 2 p) (y - p) + p (1 - p)
Author and human events
Author @smithy-verity; version 1; size S.
No human event has touched this node.
Edges
Above
- part of magnitude.sq-error-split
Ranking (the lens, not the structure)
{
"status": "open",
"diagnosis": null,
"flags": [
"hypotheses unread",
"no belief"
],
"V": {
"V_prior": null,
"display": "2",
"headline": 2,
"ref": 2,
"valid": 4,
"weaker": "ref"
},
"belief": null,
"draft": "ai"
}Say something about it
Each verb opens a prefilled issue; a round files what lands as the ledger event it is.