# SEFERIM AGI — ThatAIGuyCore: a golden-ratio cognitive substrate (open source)

> Source: <https://dev.to/joseph_anady_214bacedf939/seferim-agi-thataiguycore-a-golden-ratio-cognitive-substrate-open-source-17lf>
> Published: 2026-06-06 00:32:26+00:00

The old AI research folder on my desktop turned out to contain a complete, self-contained mathematical specification — 69 equations across 13 systems — for a golden-ratio cognitive substrate I call **SEFERIM / ThatAIGuyCore**. So I built it for real.

SEFERIM treats cognition as a 16-dimensional meta-state evolving under sixteen coupled "cognitive families," all governed by the golden ratio φ. Every dynamic is a *named, documented equation* — not an opaque weight matrix.

Constants (φ, δ, τ) → golden basis ψ_k → the 16 G¹⁶ families → meta-state core with golden-ratio momentum + stability gating → a free-energy-style objective Ω → DNA holographic memory → a 5000-gate binary substrate → an 88-agent neural brain → a 374-dimensional consciousness binding field → a lattice engine with Hebbian plasticity → federation cross-talk across agents.

``` js
import { MetaState, DNAMemory, NeuralBrain } from "seferim-core";

const mind = new MetaState({ init: new Array(16).fill(0.1) });
const out  = mind.step({ dx_norm: 0.3, ed_error: 0.1, utility: 0.6, stability: 0.8 });
console.log(out.state, "Omega =", out.omega);
```

It synthesizes the Free Energy Principle (Friston), information theory (Shannon; Cover & Thomas), holographic/vector-symbolic memory, Hebbian plasticity, and swarm consensus. I documented the lineage precisely rather than overclaim — e.g. the memory is a golden-ratio *frequency-domain* VSA inspired by (not a literal copy of) Plate's HRR, and the constant δ = 0.013618 is empirical, not 1/φ³.

The reference implementation ships with 42 fidelity tests, including the canonical FNV-1a hash vectors.

Read the full 69-equation reference and try the live demos at ** thataiguy.org/core**.