Pith Number

pith:QWM45RWA

pith:2025:QWM45RWAURS43OEUABHHHMFFM7

not attested not anchored not stored refs pending

linrax: A JAX Compatible, Simplex Method Linear Program Solver

Akash Harapanahalli, Brendan Gould, Samuel Coogan

arxiv:2509.19484 v2 · 2025-09-23 · eess.SY · cs.SY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QWM45RWAURS43OEUABHHHMFFM7}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

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.

Receipt and verification

First computed	2026-05-28T01:04:30.666500Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8599cec6c0a465cdb894004e73b0a567c8535c8dd75bf58f266aadd5e13c8964

Aliases

arxiv: 2509.19484 · arxiv_version: 2509.19484v2 · doi: 10.48550/arxiv.2509.19484 · pith_short_12: QWM45RWAURS4 · pith_short_16: QWM45RWAURS43OEU · pith_short_8: QWM45RWA

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/QWM45RWAURS43OEUABHHHMFFM7 \
  | 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: 8599cec6c0a465cdb894004e73b0a567c8535c8dd75bf58f266aadd5e13c8964

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4ff0d3056269f49de39e5e8ab8634942f38c988777d2af73ea9986918dfb44ef",
    "cross_cats_sorted": [
      "cs.SY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SY",
    "submitted_at": "2025-09-23T18:44:56Z",
    "title_canon_sha256": "9cf2090fa8c3ad3896ad0fdc7d3b3d344fc490d9ecc3daf7ad5750f55d99c2ad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.19484",
    "kind": "arxiv",
    "version": 2
  }
}