"book-pflow-xyz/chapters/appendix-d-glossary.md" . . "$\\rho$"@en . "For a transition, tokens consumed divided by tokens produced. $\\rho = 1$ is the core; $\\rho > 1$ is an observer that destroys state to produce a verdict. A property of the incidence matrix column, so every analysis of $C$ can see it. See *Core–observer boundary*."@en . . "Compression ratio"@en .