Pith Number

pith:SZVOQHCZ

pith:1998:SZVOQHCZ2DCDJR3UXB3TOMSYUS

not attested not anchored not stored refs pending

The Complexity of Planar Counting Problems

Harry B. Hunt III, Madhav V. Marathe, Richard E. Stearns, Venkatesh Radhakrishnan

arxiv:cs/9809017 v1 · 1998-09-11 · cs.CC · 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{SZVOQHCZ2DCDJR3UXB3TOMSYUS}

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	2026-07-04T14:49:25.345244Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

966ae81c59d0c434c774b877373258a4a42d6f4760dc490eaf337f5d3cd9ab89

Aliases

arxiv: cs/9809017 · arxiv_version: cs/9809017v1 · doi: 10.48550/arxiv.cs/9809017 · pith_short_12: SZVOQHCZ2DCD · pith_short_16: SZVOQHCZ2DCDJR3U · pith_short_8: SZVOQHCZ

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/SZVOQHCZ2DCDJR3UXB3TOMSYUS \
  | 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: 966ae81c59d0c434c774b877373258a4a42d6f4760dc490eaf337f5d3cd9ab89

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "36331f061c67c11390753718ef603bce7ba923ce0fa87d301e2caca6776b39c6",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "",
    "primary_cat": "cs.CC",
    "submitted_at": "1998-09-11T17:38:19Z",
    "title_canon_sha256": "515575b0aec218102742525eafd549a0adc4cc7462af5595cdcaaf533f3bc594"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/9809017",
    "kind": "arxiv",
    "version": 1
  }
}