Pith Number

pith:ON7N6L75

pith:2014:ON7N6L75SQPAZMCETZG2WSHOHF

not attested not anchored not stored refs pending

Algorithmic Aspects of Regular Graph Covers with Applications to Planar Graphs

Jan Kratochv\'il, Ji\v{r}\'i Fiala, Pavel Klav\'ik, Roman Nedela

arxiv:1402.3774 v2 · 2014-02-16 · math.CO · cs.DM · 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{ON7N6L75SQPAZMCETZG2WSHOHF}

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	2026-05-18T02:50:59.480638Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

737edf2ffd941e0cb0449e4dab48ee394120dfd0853802849369b8e157e20937

Aliases

arxiv: 1402.3774 · arxiv_version: 1402.3774v2 · doi: 10.48550/arxiv.1402.3774 · pith_short_12: ON7N6L75SQPA · pith_short_16: ON7N6L75SQPAZMCE · pith_short_8: ON7N6L75

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/ON7N6L75SQPAZMCETZG2WSHOHF \
  | 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: 737edf2ffd941e0cb0449e4dab48ee394120dfd0853802849369b8e157e20937

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5504e06f1e6845a09a204582a6587ddbabcc9fae8a7be75e99b68cca66f9229a",
    "cross_cats_sorted": [
      "cs.DM",
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-02-16T09:04:43Z",
    "title_canon_sha256": "c2a8dc32bdddbe7e7de190f8c3b4886bb8bfd0a55ef920dc58e69677c8af86f4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.3774",
    "kind": "arxiv",
    "version": 2
  }
}