Pith Number

pith:W5RY6FO6

pith:2012:W5RY6FO6ASQWSRK4DFX5DHRQST

not attested not anchored not stored refs pending

Isomorphism of graph classes related to the circular-ones property

Andrew R. Curtis, Francisco J. Soulignac, Jayme L. Szwarcfiter, Jeremy P. Spinrad, Min Chih Lin, Ross M. McConnell, Yahav Nussbaum

arxiv:1203.4822 v1 · 2012-03-21 · cs.DS · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W5RY6FO6ASQWSRK4DFX5DHRQST}

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	2026-05-18T03:13:10.978190Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7638f15de04a169455c196fd19e3094e5614e2a76cebe6f790b3e2d8b007205

Aliases

arxiv: 1203.4822 · arxiv_version: 1203.4822v1 · doi: 10.48550/arxiv.1203.4822 · pith_short_12: W5RY6FO6ASQW · pith_short_16: W5RY6FO6ASQWSRK4 · pith_short_8: W5RY6FO6

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/W5RY6FO6ASQWSRK4DFX5DHRQST \
  | 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: b7638f15de04a169455c196fd19e3094e5614e2a76cebe6f790b3e2d8b007205

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b8d764455d060201579c68fd58c7a62d15c40f1d4aeb4f70eaeba7571e8068d1",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2012-03-21T20:03:53Z",
    "title_canon_sha256": "b71d1c1764f3215b26d3fac026ab9da5c32e5d1327dd439addb2f10ab070f601"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.4822",
    "kind": "arxiv",
    "version": 1
  }
}