Pith Number

pith:F7REM5FN

pith:2008:F7REM5FNJGW44655RTGO76IRW2

not attested not anchored not stored refs pending

Dynamics Groups of Asynchronous Cellular Automata

Henning S. Mortveit, Jon McCammond, Matthew Macauley

arxiv:0808.1238 v2 · 2008-08-08 · math.DS · math.CO · math.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F7REM5FNJGW44655RTGO76IRW2}

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	2026-05-18T04:19:22.469555Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2fe24674ad49adce7bbd8ccceff911b6bf631d8dc45a97ea75ca03b6e497e49d

Aliases

arxiv: 0808.1238 · arxiv_version: 0808.1238v2 · doi: 10.48550/arxiv.0808.1238 · pith_short_12: F7REM5FNJGW4 · pith_short_16: F7REM5FNJGW44655 · pith_short_8: F7REM5FN

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/F7REM5FNJGW44655RTGO76IRW2 \
  | 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: 2fe24674ad49adce7bbd8ccceff911b6bf631d8dc45a97ea75ca03b6e497e49d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "514ac50fdaba33c6865ec8a855859f9b11c8b479390c4a3e5bb1b4a5e5369ece",
    "cross_cats_sorted": [
      "math.CO",
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2008-08-08T16:44:36Z",
    "title_canon_sha256": "8ba1d5843106a19fb4ce6139638020ad0bbed6b1edbb10503017f2c89c765d73"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0808.1238",
    "kind": "arxiv",
    "version": 2
  }
}