Pith Number

pith:ZCLHSTPH

pith:2018:ZCLHSTPHIWQACSLOGOEICX3CWD

not attested not anchored not stored refs pending

A quadratic penalty algorithm for linear programming and its application to linearizations of quadratic assignment problems

I. L. Galabova, J. A. J. Hall

arxiv:1804.09172 v1 · 2018-04-24 · 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{ZCLHSTPHIWQACSLOGOEICX3CWD}

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	2026-05-18T00:17:36.106771Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c896794de745a001496e3388815f62b0ecffb870ed042096ae156da925cac516

Aliases

arxiv: 1804.09172 · arxiv_version: 1804.09172v1 · doi: 10.48550/arxiv.1804.09172 · pith_short_12: ZCLHSTPHIWQA · pith_short_16: ZCLHSTPHIWQACSLO · pith_short_8: ZCLHSTPH

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/ZCLHSTPHIWQACSLOGOEICX3CWD \
  | 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: c896794de745a001496e3388815f62b0ecffb870ed042096ae156da925cac516

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cdf5acc619f8e3c1257ddbd288ccc9916ab6a12936b28c4f9aaaaeb984427750",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-04-24T17:57:54Z",
    "title_canon_sha256": "9dad9f1ad3205dc16dbfe638df0a652abdfae5881332427a1d9813ce322f73b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.09172",
    "kind": "arxiv",
    "version": 1
  }
}