Pith Number

pith:4SEMUCJC

pith:2003:4SEMUCJCILX7LCJPYBSOV6V4MB

not attested not anchored not stored refs pending

Punctuated equilibria and 1/f noise in a biological coevolution model with individual-based dynamics

Per Arne Rikvold (Florida State Univ.), R.K.P. Zia (Virginia Tech)

arxiv:nlin/0306023 v3 · 2003-06-15 · nlin.AO · cond-mat.stat-mech · physics.bio-ph · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4SEMUCJCILX7LCJPYBSOV6V4MB}

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	2026-07-04T14:41:47.605114Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e488ca092242eff5892fc064eafabc604f742dacae0b258ba3d8c8b22b93ef6d

Aliases

arxiv: nlin/0306023 · arxiv_version: nlin/0306023v3 · doi: 10.48550/arxiv.nlin/0306023 · pith_short_12: 4SEMUCJCILX7 · pith_short_16: 4SEMUCJCILX7LCJP · pith_short_8: 4SEMUCJC

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/4SEMUCJCILX7LCJPYBSOV6V4MB \
  | 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: e488ca092242eff5892fc064eafabc604f742dacae0b258ba3d8c8b22b93ef6d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d810de537225cd42e932d159b4505eb5ca62969a8b60bebe6ac7a7c738f5870",
    "cross_cats_sorted": [
      "cond-mat.stat-mech",
      "physics.bio-ph",
      "q-bio.PE"
    ],
    "license": "",
    "primary_cat": "nlin.AO",
    "submitted_at": "2003-06-15T02:43:15Z",
    "title_canon_sha256": "8edd33da1fa53ea0a09d7285c414050354c461a7e1e8c92043abf2b04000525d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "nlin/0306023",
    "kind": "arxiv",
    "version": 3
  }
}