Pith Number

pith:YFDKJDMQ

pith:2013:YFDKJDMQ4GV7VCQNL5Q2TCI4VT

not attested not anchored not stored refs pending

Unary negation

Balder ten Cate (UCSC), Luc Segoufin (INRIA)

arxiv:1309.2069 v2 · 2013-09-09 · cs.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{YFDKJDMQ4GV7VCQNL5Q2TCI4VT}

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	2026-05-18T01:37:37.844591Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c146a48d90e1abfa8a0d5f61a9891cace48b02fd6af62d5870d84c916ada6f17

Aliases

arxiv: 1309.2069 · arxiv_version: 1309.2069v2 · doi: 10.48550/arxiv.1309.2069 · pith_short_12: YFDKJDMQ4GV7 · pith_short_16: YFDKJDMQ4GV7VCQN · pith_short_8: YFDKJDMQ

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/YFDKJDMQ4GV7VCQNL5Q2TCI4VT \
  | 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: c146a48d90e1abfa8a0d5f61a9891cace48b02fd6af62d5870d84c916ada6f17

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b2f5a891f62f36d99a4af2f2e2f6a3845e631260785e7b36128b2d2d7b09b76a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2013-09-09T08:46:39Z",
    "title_canon_sha256": "041772909b6e85c1f0d37411ebe86023dfdfaefab8bfac2a85c3cfdf86eb9fac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.2069",
    "kind": "arxiv",
    "version": 2
  }
}