Pith Number

pith:F2UD6TRX

pith:2015:F2UD6TRXVSU3SZNTAE23BZWHST

not attested not anchored not stored refs pending

Toward formalizing ologs: Linguistic structures, instantiations, and mappings

David I. Spivak, Marco A. P\'erez

arxiv:1503.08326 v2 · 2015-03-28 · math.CT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F2UD6TRXVSU3SZNTAE23BZWHST}

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	2026-05-18T01:41:46.089278Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ea83f4e37aca9b965b30135b0e6c794e37dc74befa0fe751d3583f31928cefb

Aliases

arxiv: 1503.08326 · arxiv_version: 1503.08326v2 · doi: 10.48550/arxiv.1503.08326 · pith_short_12: F2UD6TRXVSU3 · pith_short_16: F2UD6TRXVSU3SZNT · pith_short_8: F2UD6TRX

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/F2UD6TRXVSU3SZNTAE23BZWHST \
  | 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: 2ea83f4e37aca9b965b30135b0e6c794e37dc74befa0fe751d3583f31928cefb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6954ea49c551dd0e4b7fb794e20eb74344e60f2d7901c2de85b5517af4701405",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CT",
    "submitted_at": "2015-03-28T16:48:48Z",
    "title_canon_sha256": "e99802e73cd5ce95c3fc0c1cf79d5237dc52d9f291a4db3bdc253860bd543347"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.08326",
    "kind": "arxiv",
    "version": 2
  }
}