Pith Number

pith:QO33DF4L

pith:2009:QO33DF4L4TOVCCRTM4HOFLMNPU

not attested not anchored not stored refs pending

Coevolution of competing systems: local cooperation and global inhibition

Antonio Parravano, Jose M. Albornoz

arxiv:0904.2741 v2 · 2009-04-17 · nlin.AO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QO33DF4L4TOVCCRTM4HOFLMNPU}

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	2026-05-18T02:13:59.426652Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83b7b1978be4dd510a33670ee2ad8d7d15b3fd8451ec661019df1b37c1acc96a

Aliases

arxiv: 0904.2741 · arxiv_version: 0904.2741v2 · doi: 10.48550/arxiv.0904.2741 · pith_short_12: QO33DF4L4TOV · pith_short_16: QO33DF4L4TOVCCRT · pith_short_8: QO33DF4L

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/QO33DF4L4TOVCCRTM4HOFLMNPU \
  | 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: 83b7b1978be4dd510a33670ee2ad8d7d15b3fd8451ec661019df1b37c1acc96a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b747b49392292229b4f55a100d0d69b57bad01f06441b3bd73a936a6172dcd9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.AO",
    "submitted_at": "2009-04-17T16:38:47Z",
    "title_canon_sha256": "bac23d218104de0965ef97b99c420a250ffab5b63d35ef6b2d391233500069f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.2741",
    "kind": "arxiv",
    "version": 2
  }
}