Pith Number

pith:BFRFB4RR

pith:2013:BFRFB4RRFK7KBFNFKQP54ZMBCZ

not attested not anchored not stored refs pending

Sur une s\'erie en arbres \`a deux param\`etres

Fr\'ed\'eric Chapoton (ICJ)

arxiv:1301.1843 v1 · 2013-01-09 · math.QA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BFRFB4RRFK7KBFNFKQP54ZMBCZ}

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	2026-05-18T03:36:55.831140Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

096250f2312abea095a5541fde65811653d61da20d934ba3cacb30a0e4bcc7f5

Aliases

arxiv: 1301.1843 · arxiv_version: 1301.1843v1 · doi: 10.48550/arxiv.1301.1843 · pith_short_12: BFRFB4RRFK7K · pith_short_16: BFRFB4RRFK7KBFNF · pith_short_8: BFRFB4RR

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/BFRFB4RRFK7KBFNFKQP54ZMBCZ \
  | 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: 096250f2312abea095a5541fde65811653d61da20d934ba3cacb30a0e4bcc7f5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "726e38fc8402912a549dbb5c21e4da7b8a3152aa7a9ac44fbfc21fab7f154076",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.QA",
    "submitted_at": "2013-01-09T13:09:11Z",
    "title_canon_sha256": "c58ec9976f91091630cf90b5c40749dcbca0a91fccdf3a9609068fe959a0367a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.1843",
    "kind": "arxiv",
    "version": 1
  }
}