Pith Number

pith:CPPSE77A

pith:2006:CPPSE77AKKFOU6646JCU3NF226

not attested not anchored not stored refs pending

Modal Logics of Topological Relations

Carsten Lutz, Frank Wolter

arxiv:cs/0605064 v2 · 2006-05-15 · cs.LO · cs.AI · 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{CPPSE77AKKFOU6646JCU3NF226}

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	2026-05-18T00:53:03.390468Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13df227fe0528aea7bdcf2454db4bad78fd9d157f7ee358e8b2ed2ecfb45b3ce

Aliases

arxiv: cs/0605064 · arxiv_version: cs/0605064v2 · doi: 10.48550/arxiv.cs/0605064 · pith_short_12: CPPSE77AKKFO · pith_short_16: CPPSE77AKKFOU664 · pith_short_8: CPPSE77A

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/CPPSE77AKKFOU6646JCU3NF226 \
  | 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: 13df227fe0528aea7bdcf2454db4bad78fd9d157f7ee358e8b2ed2ecfb45b3ce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b2033182a3d6bd991a7cf8a88659765fedab56255db223cf57e489112f636c0e",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.CC"
    ],
    "license": "",
    "primary_cat": "cs.LO",
    "submitted_at": "2006-05-15T14:42:36Z",
    "title_canon_sha256": "d0c3a4b8520f03a9bcb035f27596b1ad63d469a99690538f7bea5fa64f209282"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0605064",
    "kind": "arxiv",
    "version": 2
  }
}