Pith Number

pith:5C2ALEVV

pith:2026:5C2ALEVV526OGND62AIHYNODLF

not attested not anchored not stored refs pending

Attractor-Vascular Coupling Theory: Formal Grounding and Empirical Validation for AAMI-Standard Cuffless Blood Pressure Estimation from Smartphone Photoplethysmography

Farouk Ganiyu Adewumi, Timothy Oladunni

Cardiac attractor geometry from photoplethysmography encodes blood pressure data sufficient for AAMI-standard cuffless estimation.

arxiv:2605.10871 v2 · 2026-05-11 · physics.med-ph · cs.AI · cs.LG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5C2ALEVV526OGND62AIHYNODLF}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

A LightGBM model using PTT and CSI attractor features under single-point calibration achieved SBP MAE 2.05 mmHg, DBP MAE 1.67 mmHg, r=0.990/0.991 on 29,684 windows from 46 subjects, satisfying AAMI/IEEE SP10, with PPG-only ablation matching ECG+PPG within 0.05 mmHg and 91.5% error reduction from uncalibrated baseline.

C2weakest assumption

That the four AVCT predictions (including feature-importance hierarchy) are derived from Cardiac Stability Theory and Takens embedding rather than being post-hoc statements fitted to the same BIDMC/VitalDB data used for model evaluation.

C3one line summary

AVCT theory plus LightGBM on PPG attractor features achieves 2.05/1.67 mmHg MAE for SBP/DBP under LOSO-CV and meets AAMI criteria with smartphone-only input.

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-20T00:04:35.826181Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e8b40592b5eebce3347ed0107c35c3597f548620e9c3fecf43f1106bc6b841b8

Aliases

arxiv: 2605.10871 · arxiv_version: 2605.10871v2 · doi: 10.48550/arxiv.2605.10871 · pith_short_12: 5C2ALEVV526O · pith_short_16: 5C2ALEVV526OGND6 · pith_short_8: 5C2ALEVV

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/5C2ALEVV526OGND62AIHYNODLF \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: e8b40592b5eebce3347ed0107c35c3597f548620e9c3fecf43f1106bc6b841b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "686596159bf3d9201f3760767d0416354c739d1e2be043141f1a4dfc7198d906",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2026-05-11T17:24:42Z",
    "title_canon_sha256": "d8e4d47c8e9f3f85e6f95fd49af020b5580223b7551d385fc76276bae86b43a1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.10871",
    "kind": "arxiv",
    "version": 2
  }
}