Limits RegistryPUBLIC RECORDLimits RegistryResearch Console →Every k-sparse solution of Ax=y is unique exactly when the measurement matrix spark exceeds 2k.
The question, scope, and sources behind this Registry record.
Characterize uniform uniqueness of all k-sparse representations under matrix A.
Current frontiers derived from accepted Claims.
The accepted equality closes this optimization result.
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.