Pith Number

pith:YLIQAP3E

pith:2021:YLIQAP3EUJPKLXNW4DFWR4OQEM

not attested not anchored not stored refs pending

I$\heartsuit$LA: Compilable Markdown for Linear Algebra

Alec Jacobson, Shoaib Kamil, Yong Li, Yotam Gingold

arxiv:2109.13001 v1 · 2021-09-24 · cs.PL · cs.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YLIQAP3EUJPKLXNW4DFWR4OQEM}

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	2026-07-05T03:17:40.055361Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c2d1003f64a25ea5ddb6e0cb68f1d0230beff562fda7078ef2f9d4ad28e3339d

Aliases

arxiv: 2109.13001 · arxiv_version: 2109.13001v1 · doi: 10.48550/arxiv.2109.13001 · pith_short_12: YLIQAP3EUJPK · pith_short_16: YLIQAP3EUJPKLXNW · pith_short_8: YLIQAP3E

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/YLIQAP3EUJPKLXNW4DFWR4OQEM \
  | 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: c2d1003f64a25ea5ddb6e0cb68f1d0230beff562fda7078ef2f9d4ad28e3339d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "659126c0d1d976e511b45eecff33366534feb96b4f0380e1ad9c31e0c830eb2b",
    "cross_cats_sorted": [
      "cs.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2021-09-24T17:04:09Z",
    "title_canon_sha256": "2a087a060208bff19f1d3c60766d04b1589de50a640c53dd92891dfb66b8e92a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.13001",
    "kind": "arxiv",
    "version": 1
  }
}