Pith Number

pith:RITBQKIR

pith:2011:RITBQKIRWNCSLPBWHKJHMJS62A

not attested not anchored not stored refs pending

Local Optima Networks of the Quadratic Assignment Problem

Fabio Daolio (ISI), Gabriela Ochoa, Marco Tomassini (ISI), S\'ebastien Verel (INRIA Lille - Nord Europe)

arxiv:1107.4161 v1 · 2011-07-21 · 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{RITBQKIRWNCSLPBWHKJHMJS62A}

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	2026-05-18T04:17:13.114946Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8a26182911b34525bc363a9276265ed03f69c7bd628e0e298e2de1038d53a6c5

Aliases

arxiv: 1107.4161 · arxiv_version: 1107.4161v1 · doi: 10.48550/arxiv.1107.4161 · pith_short_12: RITBQKIRWNCS · pith_short_16: RITBQKIRWNCSLPBW · pith_short_8: RITBQKIR

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/RITBQKIRWNCSLPBWHKJHMJS62A \
  | 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: 8a26182911b34525bc363a9276265ed03f69c7bd628e0e298e2de1038d53a6c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe7a08b17d9f0fa035bb50aa64c957eb8a78cea8d54f9d6dfcd9feff8fe2f0f7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2011-07-21T05:07:25Z",
    "title_canon_sha256": "babc47c53fd9790f436c7eced6d9dd9627abf7468bd4d95100eaa8ff9af593cd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.4161",
    "kind": "arxiv",
    "version": 1
  }
}