Pith Number

pith:FUT2B5ES

pith:2014:FUT2B5ESOIWKPCW7BDKADP4RH7

not attested not anchored not stored refs pending

Canonical forking in AECs

Alexei Kolesnikov, Rami Grossberg, Sebastien Vasey, Will Boney

arxiv:1404.1494 v3 · 2014-04-05 · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FUT2B5ESOIWKPCW7BDKADP4RH7}

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	2026-05-18T01:16:19.172724Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d27a0f492722ca78adf08d401bf913fe9b427161a8c79e1fe5d886f849cc9dd

Aliases

arxiv: 1404.1494 · arxiv_version: 1404.1494v3 · doi: 10.48550/arxiv.1404.1494 · pith_short_12: FUT2B5ESOIWK · pith_short_16: FUT2B5ESOIWKPCW7 · pith_short_8: FUT2B5ES

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/FUT2B5ESOIWKPCW7BDKADP4RH7 \
  | 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: 2d27a0f492722ca78adf08d401bf913fe9b427161a8c79e1fe5d886f849cc9dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f4b33844481d1e76bc9539be0760b19c2e252d60a37818945b9f006cec60ad75",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2014-04-05T17:55:11Z",
    "title_canon_sha256": "426c122e1da3c7a8f51f233b0cdee2e726f03e516a964d4073c5c025eb6d8c44"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.1494",
    "kind": "arxiv",
    "version": 3
  }
}