Pith Number

pith:ZAC4ZHAR

pith:2013:ZAC4ZHARZDI5ZI3SFFDAXK5EU2

not attested not anchored not stored refs pending

Computational Universality and 1/f Noise in Elementary Cellular Automata

Shigeru Ninagawa

arxiv:1307.4938 v1 · 2013-07-18 · nlin.CG · cs.OH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZAC4ZHARZDI5ZI3SFFDAXK5EU2}

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	2026-05-18T03:18:07.135235Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c805cc9c11c8d1dca37229460baba4a699b2399734224da68612a56d6ca4a525

Aliases

arxiv: 1307.4938 · arxiv_version: 1307.4938v1 · doi: 10.48550/arxiv.1307.4938 · pith_short_12: ZAC4ZHARZDI5 · pith_short_16: ZAC4ZHARZDI5ZI3S · pith_short_8: ZAC4ZHAR

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/ZAC4ZHARZDI5ZI3SFFDAXK5EU2 \
  | 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: c805cc9c11c8d1dca37229460baba4a699b2399734224da68612a56d6ca4a525

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1dc6c5edff86cf8c63a1343c67e78ad57c60104adab22f0224b1f905a5ef8149",
    "cross_cats_sorted": [
      "cs.OH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.CG",
    "submitted_at": "2013-07-18T13:34:54Z",
    "title_canon_sha256": "9d87fa28c00593d8a7ab000f315ff683a8e36c7416c73abb5c8ad3a8ed1ab6a4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.4938",
    "kind": "arxiv",
    "version": 1
  }
}