Pith Number

pith:PS553ROV

pith:2016:PS553ROVGYW4Y3J5FZ7QKRQEOU

not attested not anchored not stored refs pending

On some extensions to GA package: hybrid optimisation, parallelisation and islands evolution

Luca Scrucca

arxiv:1605.01931 v1 · 2016-05-06 · stat.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{PS553ROVGYW4Y3J5FZ7QKRQEOU}

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	2026-05-18T00:10:30.941502Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7cbbddc5d5362dcc6d3d2e7f0546047500976482d74bf82eb92e86590db8c90a

Aliases

arxiv: 1605.01931 · arxiv_version: 1605.01931v1 · doi: 10.48550/arxiv.1605.01931 · pith_short_12: PS553ROVGYW4 · pith_short_16: PS553ROVGYW4Y3J5 · pith_short_8: PS553ROV

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/PS553ROVGYW4Y3J5FZ7QKRQEOU \
  | 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: 7cbbddc5d5362dcc6d3d2e7f0546047500976482d74bf82eb92e86590db8c90a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2cbf642573200e0807b1973ed00d4afd0cfc6021dee007521475e62b7f9dc326",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.CO",
    "submitted_at": "2016-05-06T13:22:01Z",
    "title_canon_sha256": "001265f126009d749786fe013d71a7dd606a22d471e93b7e8419a379cc32a81d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.01931",
    "kind": "arxiv",
    "version": 1
  }
}