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Fieldnote-Echo/README.md

Hey, I'm Nelson.

OpenHands - Contributor Software Agent SDK - Contributor Mathlib - Contributor

I map failure patterns across complex systems and build the security boundaries required to stabilize them.

I'm the founder of Project Navi - an open-source AI security company focused on zero trust architecture and mathematical governance. Before that, I spent seven years in behavioral health research, coordinating peer-support programs across 500+ organizations and publishing on workforce collapse in the APA Psychiatric Rehabilitation Journal.

The through-line is failure analysis. The same structural breakdowns I studied in human systems - drift under pressure, coherence loss at scale, collapse when governance is bolted on instead of built in - show up in AI deployments. So I started building infrastructure to prevent them.


What I'm Building

Machine-verified proof that self-sustaining coherence configurations exist in nonlinear elliptic PDE systems - formalizing, for the first time, the mathematical conditions under which autopoietic closure can emerge. Lean 4 against Mathlib v4.28.0. Fifteen theorems proved, zero sorry (no unfinished proofs), 3000+ build jobs clean. Where Mathlib lacks infrastructure (Schauder estimates, maximum principles, sub/super-solution theory), the axiom boundary is explicit and auditable via a single typeclass. Algebraic core proofs were synthesized using Aristotle (Harmonic) - human architecture, machine search, compiler as final arbiter. The underlying theory is in the paper.

Machine-verified proof that the (u,v)-flower graph has hub distance u^g and log-ratio convergence to log(u+v)/log(u) - the quantity that equals box-counting fractal dimension in the physics literature (Rozenfeld, Havlin & ben-Avraham 2007). Lean 4 against Mathlib v4.28.0. Zero sorry, zero custom axioms. Explicit SimpleGraph construction with graph-theoretic distance proof. This is the ground truth that navi-fractal calibrates against.

Deterministic input sanitization for untrusted text in LLM pipelines. Strips homoglyphs, invisible Unicode, null bytes, template injection, and path traversal vectors. Zero dependencies. Python 3.12+. Live on PyPI.

AI-powered PR review agent with a deterministic security rule engine. Indexes your codebase into a knowledge graph for context-aware analysis. Runs security rules before the model touches the diff. Structured findings, severity scores, pass/fail verdicts. Works with any model.

Spec-driven repo scaffolding that ships CI, security scanning, code review, and release pipelines in a single command. Jinja2 engine with 7 template packs. Define your standards once, apply them everywhere. Python 3.12+. Live on PyPI.

Audit-grade fractal dimension estimator for complex networks with refusal semantics - if the evidence for power-law scaling isn't there, you get a machine-readable refusal, not a meaningless number. Sandbox method with four quality gates: R² threshold, AICc model selection, curvature guard, slope stability. Zero dependencies. Calibrated against networks with exact analytical dimensions from fd-formalization. Python 3.12+.


Open Source Contributions

  • OpenHands: Disclosed a CVSS 9.1 security vulnerability; wrote and merged the fix into main. Contributed defense-in-depth SecurityAnalyzer ensemble.
  • Mathlib: Contributed SimpleGraph.ball (open metric ball).
  • NIST and NCCoE: Submitted responses on AI agent identity, authorization, and adversarial prompt detection (Zenodo).

The Deeper Framework

The tools are the entry point. Underneath them is a mathematical governance framework built on three foundations:

Differential Symbolic Calculus (DSC) - Measurement framework for detecting coherence-exploration coupling in dynamical systems. Instrumentation, not simulation.

World Model Capital (WMC) - Trust-allocation system adapting Recovery Capital frameworks from behavioral health to AI governance. Trust capital for machine cognition.

Relational Emergent Ontology (REO) - Philosophical foundation where intelligence is event, identity is rhythm, ethics is resonance.

You don't need to understand any of this to use the tools. But if you're curious - I started here because the principles that help people recover help systems stay whole.


Get In Touch


Machine cognition, human values.

The knowledge is free, the community is open. If you wish to support our mission, buy a t-shirt. 🐘

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