Pith Number

pith:VTEP7NCZ

pith:2011:VTEP7NCZSRPDBSVKHR4PHOEAFV

not attested not anchored not stored refs pending

Fully dynamic recognition of proper circular-arc graphs

Francisco J. Soulignac

arxiv:1111.3548 v1 · 2011-11-15 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VTEP7NCZSRPDBSVKHR4PHOEAFV}

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	2026-05-18T02:45:12.861327Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

acc8ffb459945e30caaa3c78f3b8802d7a3b2a95ab8a8cec096640b4364da273

Aliases

arxiv: 1111.3548 · arxiv_version: 1111.3548v1 · doi: 10.48550/arxiv.1111.3548 · pith_short_12: VTEP7NCZSRPD · pith_short_16: VTEP7NCZSRPDBSVK · pith_short_8: VTEP7NCZ

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/VTEP7NCZSRPDBSVKHR4PHOEAFV \
  | 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: acc8ffb459945e30caaa3c78f3b8802d7a3b2a95ab8a8cec096640b4364da273

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "16aa9ceb87175b354878a54ed622c1461d85e5a8f739bb17670c469cca66ccd2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2011-11-15T15:06:54Z",
    "title_canon_sha256": "00ebc21535c3ec8706375296d43706581f9734c76db3ef5de5ed287cd5060198"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.3548",
    "kind": "arxiv",
    "version": 1
  }
}