Pith Number

pith:FL7NXYAT

pith:2012:FL7NXYAT643CNPVNWZUFZZTSLQ

not attested not anchored not stored refs pending

Heuristic algorithms for the bipartite unconstrained 0-1 quadratic programming problem

Abraham P. Punnen, Daniel Karapetyan

arxiv:1210.3684 v2 · 2012-10-13 · cs.DM · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FL7NXYAT643CNPVNWZUFZZTSLQ}

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	2026-05-18T03:17:57.145812Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2afedbe013f73626beadb6685ce6725c2a588e014b65db655f1b4095a87b66b9

Aliases

arxiv: 1210.3684 · arxiv_version: 1210.3684v2 · doi: 10.48550/arxiv.1210.3684 · pith_short_12: FL7NXYAT643C · pith_short_16: FL7NXYAT643CNPVN · pith_short_8: FL7NXYAT

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/FL7NXYAT643CNPVNWZUFZZTSLQ \
  | 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: 2afedbe013f73626beadb6685ce6725c2a588e014b65db655f1b4095a87b66b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc39707ae74c264d395bbd452371c53477d47c17fde3ce5d8c8fa7d3890035e5",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2012-10-13T07:43:38Z",
    "title_canon_sha256": "4e98481fb44be273c17f61ef29fb805028fe110b9a179b582ea5ae543d2f21dc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.3684",
    "kind": "arxiv",
    "version": 2
  }
}