Pith Number

pith:7QH5QARL

pith:2013:7QH5QARLKXFCW2HDDOMRNL65WR

not attested not anchored not stored refs pending

The Myhill property for cellular automata on amenable semigroups

Michel Coornaert, Tullio Ceccherini-Silberstein

arxiv:1302.5965 v3 · 2013-02-24 · math.DS · math.FA · 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{7QH5QARLKXFCW2HDDOMRNL65WR}

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	2026-05-18T02:17:01.614636Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc0fd8022b55ca2b68e31b9916afddb45024075ccf13ade67a471b52920c5e8f

Aliases

arxiv: 1302.5965 · arxiv_version: 1302.5965v3 · doi: 10.48550/arxiv.1302.5965 · pith_short_12: 7QH5QARLKXFC · pith_short_16: 7QH5QARLKXFCW2HD · pith_short_8: 7QH5QARL

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/7QH5QARLKXFCW2HDDOMRNL65WR \
  | 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: fc0fd8022b55ca2b68e31b9916afddb45024075ccf13ade67a471b52920c5e8f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0e42dc2d96a4eda0a6a6046c75a1949f3c939af691cfaf76be3445b7eeb13c89",
    "cross_cats_sorted": [
      "math.FA",
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2013-02-24T23:08:14Z",
    "title_canon_sha256": "938e28f5fa7b8b80dee9323e8ea61331ccf356c9efc8b394b3f81b9af9256186"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.5965",
    "kind": "arxiv",
    "version": 3
  }
}