Pith Number

pith:INU2XPFN

pith:2012:INU2XPFNGMU65JYXUQF5KHHMLU

not attested not anchored not stored refs pending

Memetic firefly algorithm for combinatorial optimization

Iztok Fister, Iztok Fister Jr, Janez Brest, Xin-She Yang

arxiv:1204.5165 v2 · 2012-04-23 · math.OC · math.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{INU2XPFNGMU65JYXUQF5KHHMLU}

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	2026-05-18T03:55:55.766882Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4369abbcad3329eea717a40bd51cec5d102a18fc767ddc5fd7c9c3856e4d542b

Aliases

arxiv: 1204.5165 · arxiv_version: 1204.5165v2 · doi: 10.48550/arxiv.1204.5165 · pith_short_12: INU2XPFNGMU6 · pith_short_16: INU2XPFNGMU65JYX · pith_short_8: INU2XPFN

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/INU2XPFNGMU65JYXUQF5KHHMLU \
  | 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: 4369abbcad3329eea717a40bd51cec5d102a18fc767ddc5fd7c9c3856e4d542b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d095bfcf19c3862267739d72cc9409eda9b74be57a93ede8569ec5cd107a1ee9",
    "cross_cats_sorted": [
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2012-04-23T19:51:45Z",
    "title_canon_sha256": "1e732ab793ea89ba81fb077a1db810c4c7c9d174ee018e58f73bedc15dd7f6e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.5165",
    "kind": "arxiv",
    "version": 2
  }
}