Pith Number

pith:CB6EPPUY

pith:2014:CB6EPPUYHSKLLERVQXSWJIN5YE

not attested not anchored not stored refs pending

On trees invariant under edge contraction

Olivier H\'enard, Pascal Maillard

arxiv:1403.5491 v3 · 2014-03-21 · math.PR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CB6EPPUYHSKLLERVQXSWJIN5YE}

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	2026-05-18T00:12:57.327290Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

107c47be983c94b5923585e564a1bdc124277ee6d297d9a141cf8ff2f1fb3c48

Aliases

arxiv: 1403.5491 · arxiv_version: 1403.5491v3 · doi: 10.48550/arxiv.1403.5491 · pith_short_12: CB6EPPUYHSKL · pith_short_16: CB6EPPUYHSKLLERV · pith_short_8: CB6EPPUY

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/CB6EPPUYHSKLLERVQXSWJIN5YE \
  | 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: 107c47be983c94b5923585e564a1bdc124277ee6d297d9a141cf8ff2f1fb3c48

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a48b2c712030d038a63f62f748b9797b74cd37ce0055771d5873ba3563e970d5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.PR",
    "submitted_at": "2014-03-21T15:18:48Z",
    "title_canon_sha256": "a1143ea0c6e2565a2459e3574c210f03849a1396ab7c913c256b389f4427fb9e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.5491",
    "kind": "arxiv",
    "version": 3
  }
}