Pith Number

pith:NR2QR5Y4

pith:2011:NR2QR5Y4VD5UHMPMVUT4RLFITS

not attested not anchored not stored refs pending

The Wiener maximum quadratic assignment problem

Eranda \c{C}ela, Gerhard J. Woeginger, Nina S. Schmuck, Shmuel Wimer

arxiv:1102.3030 v3 · 2011-02-15 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NR2QR5Y4VD5UHMPMVUT4RLFITS}

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	2026-05-18T04:23:47.707068Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c7508f71ca8fb43b1ecad27c8aca89cb82b50489c67fc814e9a993104210e11

Aliases

arxiv: 1102.3030 · arxiv_version: 1102.3030v3 · doi: 10.48550/arxiv.1102.3030 · pith_short_12: NR2QR5Y4VD5U · pith_short_16: NR2QR5Y4VD5UHMPM · pith_short_8: NR2QR5Y4

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/NR2QR5Y4VD5UHMPMVUT4RLFITS \
  | 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: 6c7508f71ca8fb43b1ecad27c8aca89cb82b50489c67fc814e9a993104210e11

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c988e87400d67110d992453547ce524f9b877ab2af337dedff10325a37dfe7b6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2011-02-15T10:37:08Z",
    "title_canon_sha256": "a54de8eff9c581bf19d79e264838b8f92e2d759d400cdb750da70a415c98d525"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.3030",
    "kind": "arxiv",
    "version": 3
  }
}