Pith Number

pith:LQYWYTNQ

pith:2012:LQYWYTNQVX3GWKUYQNX6KJWKWQ

not attested not anchored not stored refs pending

A Dichotomy for 2-Constraint Forbidden CSP Patterns

Guillaume Escamocher, Martin C. Cooper

arxiv:1201.3868 v1 · 2012-01-18 · 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{LQYWYTNQVX3GWKUYQNX6KJWKWQ}

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	2026-05-18T04:04:17.717635Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5c316c4db0adf66b2a98836fe526cab40b3abc374a02cc224bb2e97ba8491037

Aliases

arxiv: 1201.3868 · arxiv_version: 1201.3868v1 · doi: 10.48550/arxiv.1201.3868 · pith_short_12: LQYWYTNQVX3G · pith_short_16: LQYWYTNQVX3GWKUY · pith_short_8: LQYWYTNQ

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/LQYWYTNQVX3GWKUYQNX6KJWKWQ \
  | 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: 5c316c4db0adf66b2a98836fe526cab40b3abc374a02cc224bb2e97ba8491037

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c973738f8961ef42526ce5cf1d719e4773ba381c7b8b4ba9d55fee76a8332fce",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2012-01-18T18:09:36Z",
    "title_canon_sha256": "6fb8dc06602f6ccc09fc950eec7637aabac412d8ec6dd4da7af8a18cbe71d21f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.3868",
    "kind": "arxiv",
    "version": 1
  }
}