Pith Number

pith:CBAORTZI

pith:2018:CBAORTZIMJVSYXSNFHM6ELQJJL

not attested not anchored not stored refs pending

Counting Induced Subgraphs: A Topological Approach to #W[1]-hardness

Johannes Schmitt, Marc Roth

arxiv:1807.01920 v1 · 2018-07-05 · cs.CC

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CBAORTZIMJVSYXSNFHM6ELQJJL}

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	2026-05-18T00:11:24.705500Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1040e8cf28626b2c5e4d29d9e22e094aebbc0eda62038e97f270ff910229be20

Aliases

arxiv: 1807.01920 · arxiv_version: 1807.01920v1 · doi: 10.48550/arxiv.1807.01920 · pith_short_12: CBAORTZIMJVS · pith_short_16: CBAORTZIMJVSYXSN · pith_short_8: CBAORTZI

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/CBAORTZIMJVSYXSNFHM6ELQJJL \
  | 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: 1040e8cf28626b2c5e4d29d9e22e094aebbc0eda62038e97f270ff910229be20

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d980b862c880acef172926a798997065cccc90e0a1a0799add53fe4af3e005b8",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2018-07-05T09:51:21Z",
    "title_canon_sha256": "ce2d38103de1125a22c75f41421d6c85ad49174032868bd7fcac14f2afbc9f48"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.01920",
    "kind": "arxiv",
    "version": 1
  }
}