645f2d8d27
Singular-perturbation reduction of the PKE+T/H system: set dn/dt=0,
solve algebraically n = Λ·Σλ_i·C_i / (β-ρ). State drops 10 -> 9 (no
n), removes Λ⁻¹ stiffness. Validated against full state on the heatup
scenario:
t [s] |Δn|/n_full T_c err [K]
60 3.7e-5 4e-6
300 3.8e-4 1.9e-4
1200 1.0e-3 2.2e-3
3000 5.0e-4 7.2e-3
Maximum relative error 0.1% on n, peak 7 mK on temperatures over
50 minutes. PJ approximation is excellent for slow heatup transients
(sub-prompt-critical regime).
Files:
- code/src/pke_th_rhs_pj.jl: reduced 9-state RHS
- code/scripts/validate_pj.jl: side-by-side sim
- code/scripts/reach_heatup_pj.jl: TMJets reach with PJ model
(probing T = 60, 300, 1800, 5400 s)
App v2 (Pluto):
- §9b: live ingestion of reach_operation_result.mat with per-
halfspace margins computed from JSON-defined inv2_holds.
- §9c: 2D projection chooser (n, T_f, T_c, T_cold) with reach
tube envelope overlay.
- §9d: PJ heatup reach summary (placeholder until first run lands).
Journal:
- Added 2026-04-20-overnight-prompt-jump.tex with PJ derivation,
validation table, soundness ledger update. apass markers for
the in-progress reach results.
This commit captures state mid-run; next commit will add the
populated reach results once TMJets returns.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
79 lines
2.6 KiB
TeX
79 lines
2.6 KiB
TeX
% journal.tex — top-level document that aggregates all dated entries.
|
|
%
|
|
% Build:
|
|
% cd journal && latexmk -pdf journal.tex
|
|
% or individual entry:
|
|
% cd journal && latexmk -pdf entries/2026-04-17-controllers-linear-reach.tex
|
|
|
|
\input{preamble.tex}
|
|
|
|
\title{HAHACS Lab Journal\\
|
|
\large PWR\_HYBRID\_3 preliminary example, invention log}
|
|
\author{Dane Sabo, with Claude (Hacker-Split)}
|
|
\date{Started \today}
|
|
|
|
\begin{document}
|
|
|
|
\maketitle
|
|
\tableofcontents
|
|
\newpage
|
|
|
|
\section*{How to read this journal}
|
|
|
|
Each section is a dated session. Sessions are written in two styles:
|
|
|
|
\begin{itemize}
|
|
\item \textbf{Deep (A-style)}: full invention-log depth. Derivations
|
|
in math, code snippets with commentary, figures with long
|
|
captions, dead-ends documented, terminal output included where
|
|
it changes the story. A reader in 2030 should be able to
|
|
rebuild the work from this alone.
|
|
\item \textbf{Narrative (B-style)}: end-of-session notes with
|
|
pointers. Marked with \apass{some detail} callouts for
|
|
content that should be expanded in a later A-pass.
|
|
\end{itemize}
|
|
|
|
\textbf{File-path archaeology note.} Entries dated on or before
|
|
2026-04-20 (afternoon) refer to MATLAB files under \texttt{plant-model/}
|
|
and a MATLAB-Julia split where Julia code lived under \texttt{julia-port/}.
|
|
The 2026-04-20 evening mega-session ported everything to Julia and
|
|
deleted MATLAB; the result is the unified \texttt{code/} directory.
|
|
Path references in earlier entries are historically accurate for their
|
|
date; recover the corresponding sources via \texttt{git log} or the
|
|
parent commit at the time.
|
|
|
|
Callout boxes signal specific content types:
|
|
|
|
\begin{derivation}
|
|
Mathematical derivations — algebra, integrals, limits. Where they
|
|
matter to the safety claim, they live here in full.
|
|
\end{derivation}
|
|
|
|
\begin{decision}
|
|
Design decisions made during the session, with the rationale and the
|
|
alternatives considered.
|
|
\end{decision}
|
|
|
|
\begin{deadend}
|
|
Approaches that didn't work and why. These are as valuable as the
|
|
working paths — they keep the next explorer from repeating the mistake.
|
|
\end{deadend}
|
|
|
|
\begin{limitation}
|
|
Known-approximate or known-broken behavior. Soundness gaps live here.
|
|
Each limitation ties to a plan or an open question.
|
|
\end{limitation}
|
|
|
|
\newpage
|
|
|
|
% ---- Session entries, in chronological order -------------------------------
|
|
\input{entries/2026-04-17-controllers-linear-reach.tex}
|
|
\newpage
|
|
\input{entries/2026-04-20-predicates-boundaries-julia-nonlinear.tex}
|
|
\newpage
|
|
\input{entries/2026-04-20-evening-mega-session.tex}
|
|
\newpage
|
|
\input{entries/2026-04-20-overnight-prompt-jump.tex}
|
|
|
|
\end{document}
|