Pith Number

pith:KISJFHEK

pith:2019:KISJFHEKPLXTTBGADHXKAISFQV

not attested not anchored not stored refs pending

Circle Graph Isomorphism in Almost Linear Time

Pavel Klav\'ik, Peter Zeman, V\'it Kalisz

arxiv:1908.09151 v1 · 2019-08-24 · cs.DS · 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{KISJFHEKPLXTTBGADHXKAISFQV}

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	2026-07-04T23:59:37.254999Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5224929c8a7aef3984c019eea02245857974862d9d719443c3a1ef739e12e269

Aliases

arxiv: 1908.09151 · arxiv_version: 1908.09151v1 · doi: 10.48550/arxiv.1908.09151 · pith_short_12: KISJFHEKPLXT · pith_short_16: KISJFHEKPLXTTBGA · pith_short_8: KISJFHEK

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/KISJFHEKPLXTTBGADHXKAISFQV \
  | 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: 5224929c8a7aef3984c019eea02245857974862d9d719443c3a1ef739e12e269

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c55ab3b13c2483829631b7150c8f38161886d4c06695e060ba77d6a3c3d8878b",
    "cross_cats_sorted": [
      "cs.DM",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2019-08-24T15:17:27Z",
    "title_canon_sha256": "b2ca33c24a205e8e6c7c24abf463ebf1031c1fbe5b4a084773ed15595f3c695d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.09151",
    "kind": "arxiv",
    "version": 1
  }
}