Pith Number

pith:6LGH6F5D

pith:2011:6LGH6F5DN7LCC2VGHBIPZ62ZCK

not attested not anchored not stored refs pending

Canonical forests in directed families

Joseph Flenner, Vincent Guingona

arxiv:1111.2843 v2 · 2011-11-11 · 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{6LGH6F5DN7LCC2VGHBIPZ62ZCK}

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	2026-05-18T04:07:31.878233Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f2cc7f17a36fd6216aa63850fcfb5912a18f59a0ca2431fefc399804bed208a2

Aliases

arxiv: 1111.2843 · arxiv_version: 1111.2843v2 · doi: 10.48550/arxiv.1111.2843 · pith_short_12: 6LGH6F5DN7LC · pith_short_16: 6LGH6F5DN7LCC2VG · pith_short_8: 6LGH6F5D

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/6LGH6F5DN7LCC2VGHBIPZ62ZCK \
  | 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: f2cc7f17a36fd6216aa63850fcfb5912a18f59a0ca2431fefc399804bed208a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "54f165dbdf2b3356a15382dbf20befd6c989212adf80a3184d5dd11a43551d70",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2011-11-11T20:28:13Z",
    "title_canon_sha256": "fb67ffc1d427e5b9abf03e1c9a0f92ae12a6c26e914a903e0b572a43195d0f88"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.2843",
    "kind": "arxiv",
    "version": 2
  }
}