Pith Number

pith:B3PDPBOD

pith:2002:B3PDPBODYL3MFQZ4C5OSWT4DUK

not attested not anchored not stored refs pending

Knuth-Bendix constraint solving is NP-complete

Andrei Voronkov, Konstantin Korovin

arxiv:cs/0207068 v1 · 2002-07-17 · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{B3PDPBODYL3MFQZ4C5OSWT4DUK}

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	2026-07-04T14:24:19.766178Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0ede3785c3c2f6c2c33c175d2b4f83a2b50be96b3c9dff6649605c964adfb239

Aliases

arxiv: cs/0207068 · arxiv_version: cs/0207068v1 · doi: 10.48550/arxiv.cs/0207068 · pith_short_12: B3PDPBODYL3M · pith_short_16: B3PDPBODYL3MFQZ4 · pith_short_8: B3PDPBOD

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/B3PDPBODYL3MFQZ4C5OSWT4DUK \
  | 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: 0ede3785c3c2f6c2c33c175d2b4f83a2b50be96b3c9dff6649605c964adfb239

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "349f87852f052d617fb5d85793042a1f8dba9694fe85af1624f4af27afdbab9a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cs.LO",
    "submitted_at": "2002-07-17T18:34:45Z",
    "title_canon_sha256": "0e45493fa4c5cc6a4dccdedf9f9990604db37df7c7f4e5ee646b9b874be49057"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0207068",
    "kind": "arxiv",
    "version": 1
  }
}