Pith Number

pith:COWROXEV

pith:2011:COWROXEVY4NMICBW5CR3GUR47A

not attested not anchored not stored refs pending

Tangles, trees, and flowers

Ben Clark, Geoff Whittle

arxiv:1109.1048 v1 · 2011-09-06 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{COWROXEVY4NMICBW5CR3GUR47A}

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	2026-05-18T04:14:05.525068Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13ad175c95c71ac40836e8a3b3523cf82b5aa95048c30c6b641c3c65929595b5

Aliases

arxiv: 1109.1048 · arxiv_version: 1109.1048v1 · doi: 10.48550/arxiv.1109.1048 · pith_short_12: COWROXEVY4NM · pith_short_16: COWROXEVY4NMICBW · pith_short_8: COWROXEV

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/COWROXEVY4NMICBW5CR3GUR47A \
  | 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: 13ad175c95c71ac40836e8a3b3523cf82b5aa95048c30c6b641c3c65929595b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4433967a8f31a685e6c4bd8ea5fa0771b05e51bf6b236aa2cc3671b48debb6b9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-09-06T03:51:00Z",
    "title_canon_sha256": "da619cf616c9df6d03bdb8c59a187285c45cd197b3276fbaf290c3c522a9a688"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.1048",
    "kind": "arxiv",
    "version": 1
  }
}