Pith Number

pith:IW4DWMLR

pith:2016:IW4DWMLR4VUQESGZ6FUOYNPXSB

not attested not anchored not stored refs pending

A weakly universal cellular automaton on the tessellation $\{8,3\}$

Maurice Margenstern

arxiv:1606.03938 v2 · 2016-06-13 · cs.DM · nlin.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IW4DWMLR4VUQESGZ6FUOYNPXSB}

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	2026-05-18T01:10:42.542623Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

45b83b3171e5690248d9f168ec35f7904639b4f8f684c0a9c3f0f9d6dbd7c757

Aliases

arxiv: 1606.03938 · arxiv_version: 1606.03938v2 · doi: 10.48550/arxiv.1606.03938 · pith_short_12: IW4DWMLR4VUQ · pith_short_16: IW4DWMLR4VUQESGZ · pith_short_8: IW4DWMLR

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/IW4DWMLR4VUQESGZ6FUOYNPXSB \
  | 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: 45b83b3171e5690248d9f168ec35f7904639b4f8f684c0a9c3f0f9d6dbd7c757

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5696ca1618653b6ba22bb095276b3eb41d0bbd0f0a464a6147b3af9b29205f2b",
    "cross_cats_sorted": [
      "nlin.CG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2016-06-13T13:31:15Z",
    "title_canon_sha256": "7313c378827966e6a5273a2be6368ba943ca9909dc0087a0400e1753e8c493e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1606.03938",
    "kind": "arxiv",
    "version": 2
  }
}