Limits RegistryPUBLIC RECORDLimits RegistryResearch Console →Conditional-entropy bound induced by any estimator's error probability.
The question, scope, and sources behind this Registry record.
Bound uncertainty remaining after observation Y in terms of the probability of incorrectly estimating finite-alphabet X.
Current frontiers derived from accepted Claims.
Assertions tied to evidence, attribution, and review.
The frontier as it changed over time.
Only accepted Claims matching the current specification contribute to the displayed bounds. Strict inequalities remain open; contradictory Claims require editorial review.
No accepted machine-checked reproductions are recorded for this Limit.
Limits Registry. LR-003214. Fano inequality error floor. 2026.