Pith Number

pith:6S36XXZM

pith:2014:6S36XXZMHLL53E6YTHRRW3XABX

not attested not anchored not stored refs pending

Forbidden structure characterization of circular-arc graphs and a certifying recognition algorithm

Juraj Stacho, Mathew Francis, Pavol Hell

arxiv:1408.2639 v1 · 2014-08-12 · cs.DM · 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{6S36XXZMHLL53E6YTHRRW3XABX}

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	2026-05-18T02:45:22.614803Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f4b7ebdf2c3ad7dd93d899e31b6ee00decb4f9e95ab27f8e74caf88e140b1de5

Aliases

arxiv: 1408.2639 · arxiv_version: 1408.2639v1 · doi: 10.48550/arxiv.1408.2639 · pith_short_12: 6S36XXZMHLL5 · pith_short_16: 6S36XXZMHLL53E6Y · pith_short_8: 6S36XXZM

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/6S36XXZMHLL53E6YTHRRW3XABX \
  | 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: f4b7ebdf2c3ad7dd93d899e31b6ee00decb4f9e95ab27f8e74caf88e140b1de5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b9a6ea48951d3feae51b6d64eed52db71242d9a10c49e14d5954ca006f68d94f",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2014-08-12T07:11:46Z",
    "title_canon_sha256": "0f96a2f342f0496639744226e98c31fc64b25825be1f5f29f29e9f0a39739afd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.2639",
    "kind": "arxiv",
    "version": 1
  }
}