Pith Number

pith:UGZ2U5VP

pith:2013:UGZ2U5VP3C4JS2ODOI3342CQ6Y

not attested not anchored not stored refs pending

3-SAT Problem A New Memetic-PSO Algorithm

Jamshid Tamouk, Mina Farmanbar, Nasser Lotfi

arxiv:1306.5070 v1 · 2013-06-21 · cs.AI · cs.NE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UGZ2U5VP3C4JS2ODOI3342CQ6Y}

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	2026-05-18T03:20:19.818708Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a1b3aa76afd8b89969c37237be6850f607bd5d0ee0223f49e6459b28f1f14ec7

Aliases

arxiv: 1306.5070 · arxiv_version: 1306.5070v1 · doi: 10.48550/arxiv.1306.5070 · pith_short_12: UGZ2U5VP3C4J · pith_short_16: UGZ2U5VP3C4JS2OD · pith_short_8: UGZ2U5VP

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/UGZ2U5VP3C4JS2ODOI3342CQ6Y \
  | 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: a1b3aa76afd8b89969c37237be6850f607bd5d0ee0223f49e6459b28f1f14ec7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee041046281b2a29900d0ed34ecf8560b0734a68e8c389cbcadabe23641ff09b",
    "cross_cats_sorted": [
      "cs.NE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2013-06-21T08:10:44Z",
    "title_canon_sha256": "1dc7e2964a67a3e16c936da2813f2c93c9088a2fb1fe1489ad8c695e23a217e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.5070",
    "kind": "arxiv",
    "version": 1
  }
}