Pith Number

pith:NCD4P76X

pith:2011:NCD4P76XPFBEVEJCQ7YGR2U7DT

not attested not anchored not stored refs pending

Subclasses of Normal Helly Circular-Arc Graphs

Francisco J. Soulignac, Jayme L. Szwarcfiter, Min Chih Lin

arxiv:1103.3732 v1 · 2011-03-18 · 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{NCD4P76XPFBEVEJCQ7YGR2U7DT}

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	2026-05-18T02:22:18.158802Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6887c7ffd779424a912287f068ea9f1cfcf33662a6996f22abe3add395b0b611

Aliases

arxiv: 1103.3732 · arxiv_version: 1103.3732v1 · doi: 10.48550/arxiv.1103.3732 · pith_short_12: NCD4P76XPFBE · pith_short_16: NCD4P76XPFBEVEJC · pith_short_8: NCD4P76X

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/NCD4P76XPFBEVEJCQ7YGR2U7DT \
  | 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: 6887c7ffd779424a912287f068ea9f1cfcf33662a6996f22abe3add395b0b611

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "beaae41bf88c1e139e5d22e77395b829f0720c10ed242433a8c4ef79b4fda91d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2011-03-18T23:50:51Z",
    "title_canon_sha256": "f2886c6eb6776599783977b93cf36777f781bc620b8291a3fdf69b542b43cc6e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.3732",
    "kind": "arxiv",
    "version": 1
  }
}