Read the equation
This relation contains a squared-state or squared-error term. Squaring makes that contribution nonnegative and increases the penalty for larger magnitudes; the surrounding definition specifies whether it is a cost, normalization or summary statistic.
Terms & definitions
The recovered passage does not supply a separate symbol table. Read the source context for the notation used in this version; familiar letters may carry different meanings in other builds.
How it works
Read \sigma as the quantity being defined or updated by this relation.
Uses a derivative or gradient to describe a rate of change or a direction of variation.
Use this version’s variable definitions and update order. The same symbol may be assigned a different meaning in another build.
Assumptions & limits
Source recovery establishes that the expression appears in this record. Its mathematical validity, implementation behavior, and interpretation must be assessed separately. See the linked source and research notes for the checks available for this version.
Original context
Read the surrounding source passage
A. Stability Term You used coherence (dx), but you never defined the stability curvature: \sigma = \partial^2 \psi / \partial t^2 This is what prevents oscillation in Φ-loops. ⸻ B. Transition Kernel
Exact original notation
\sigma = \partial^2 \psi / \partial t^2
Related builds
Sources & provenance
\sigma = \partial^2 \psi / \partial t^2