Pith Number

pith:XOQVHDXP

pith:2013:XOQVHDXPCMTYDJIHQYSXLQWSSA

not attested not anchored not stored refs pending

Extending Partial Representations of Interval Graphs

Jan Kratochv\'il, Pavel Klav\'ik, Tom\'a\v{s} Vysko\v{c}il, Toshiki Saitoh, Yota Otachi

arxiv:1306.2182 v2 · 2013-06-10 · 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{XOQVHDXPCMTYDJIHQYSXLQWSSA}

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	2026-05-18T02:51:42.313080Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bba1538eef132781a507862575c2d2902ed3ed363225fa2d8cf9dac59bb43b13

Aliases

arxiv: 1306.2182 · arxiv_version: 1306.2182v2 · doi: 10.48550/arxiv.1306.2182 · pith_short_12: XOQVHDXPCMTY · pith_short_16: XOQVHDXPCMTYDJIH · pith_short_8: XOQVHDXP

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/XOQVHDXPCMTYDJIHQYSXLQWSSA \
  | 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: bba1538eef132781a507862575c2d2902ed3ed363225fa2d8cf9dac59bb43b13

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f47d1ca164911ab5add2d671cc0d3c0372484f6331a0556c5989133198229c10",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2013-06-10T12:30:31Z",
    "title_canon_sha256": "e240ee9ced1cde66b475315e6892b3505c71745e1a681f6e3996814d33a72e44"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.2182",
    "kind": "arxiv",
    "version": 2
  }
}