Pith Number

pith:NTHUIOJA

pith:2014:NTHUIOJACQYE7TV5SIPICTVBCB

not attested not anchored not stored refs pending

On Residually Finite Semigroups of Cellullar Automata

Michel Coornaert, Tullio Ceccherini-Silberstein

arxiv:1410.5351 v2 · 2014-10-20 · math.GR · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NTHUIOJACQYE7TV5SIPICTVBCB}

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	2026-05-18T01:35:05.058128Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6ccf44392014304fcebd921e814ea11045bde1e0ebb64a8e91ada77464c867f4

Aliases

arxiv: 1410.5351 · arxiv_version: 1410.5351v2 · doi: 10.48550/arxiv.1410.5351 · pith_short_12: NTHUIOJACQYE · pith_short_16: NTHUIOJACQYE7TV5 · pith_short_8: NTHUIOJA

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/NTHUIOJACQYE7TV5SIPICTVBCB \
  | 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: 6ccf44392014304fcebd921e814ea11045bde1e0ebb64a8e91ada77464c867f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7003721778bc149f7af00fb85aadde591e64032c85bb886750c349a0009bacd",
    "cross_cats_sorted": [
      "math.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2014-10-20T16:52:51Z",
    "title_canon_sha256": "62c4c943b40b3cf859240a1727d48c2eebe76192e5ac2e3c1e3018a344416a4f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1410.5351",
    "kind": "arxiv",
    "version": 2
  }
}