Pith Number

pith:EN4J7AQE

pith:2012:EN4J7AQEB7DQNCBJRT7YMSGQ3K

not attested not anchored not stored refs pending

Containment, Equivalence and Coreness from CSP to QCSP and beyond

Barnaby Martin, Florent Madelaine

arxiv:1204.5981 v1 · 2012-04-26 · cs.LO · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EN4J7AQEB7DQNCBJRT7YMSGQ3K}

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	2026-05-18T03:56:58.822489Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23789f82040fc70688298cff8648d0dab6fe24da20b7d67ed036cb6c4dc376b4

Aliases

arxiv: 1204.5981 · arxiv_version: 1204.5981v1 · doi: 10.48550/arxiv.1204.5981 · pith_short_12: EN4J7AQEB7DQ · pith_short_16: EN4J7AQEB7DQNCBJ · pith_short_8: EN4J7AQE

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/EN4J7AQEB7DQNCBJRT7YMSGQ3K \
  | 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: 23789f82040fc70688298cff8648d0dab6fe24da20b7d67ed036cb6c4dc376b4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b123923b13e5917e66b70753e2955519309797153b5a8961f868b54da8bb94bd",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2012-04-26T16:46:25Z",
    "title_canon_sha256": "910ae25bc69c3e2c7ce98a0e92d7bc4e0f6fd93c5f29712443a3e9618d0f9285"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.5981",
    "kind": "arxiv",
    "version": 1
  }
}