Pith Number

pith:SXDK2REY

pith:2009:SXDK2REYCYS4YK4WUCYXGJT52I

not attested not anchored not stored refs pending

Spontaneous organization leads to robustness in evolutionary algorithms

James M. Whitacre, Q. Tuan Pham, Ruhul A. Sarker

arxiv:0907.0507 v2 · 2009-07-03 · cs.NE · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SXDK2REYCYS4YK4WUCYXGJT52I}

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	2026-05-18T04:30:02.957771Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

95c6ad44981625cc2b96a0b173267dd20d071ba33d88d8721b73419bf4d8e179

Aliases

arxiv: 0907.0507 · arxiv_version: 0907.0507v2 · doi: 10.48550/arxiv.0907.0507 · pith_short_12: SXDK2REYCYS4 · pith_short_16: SXDK2REYCYS4YK4W · pith_short_8: SXDK2REY

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/SXDK2REYCYS4YK4WUCYXGJT52I \
  | 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: 95c6ad44981625cc2b96a0b173267dd20d071ba33d88d8721b73419bf4d8e179

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb1c4ca94430fe89c3736c7fe63b32b53aaae311c128e0953b32cc7db8d1ef58",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NE",
    "submitted_at": "2009-07-03T00:34:32Z",
    "title_canon_sha256": "9811a9c437257616836629cff58d9f2dcfacdf953706c52e1a72f3b6c66f6ddb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.0507",
    "kind": "arxiv",
    "version": 2
  }
}