Pith Number

pith:7EYBGWXX

pith:2010:7EYBGWXX4JKL7YSBBVX5L6BYBA

not attested not anchored not stored refs pending

The Myhill property for strongly irreducible subshifts over amenable groups

Michel Coornaert, Tullio Ceccherini-Silberstein

arxiv:1004.2422 v2 · 2010-04-14 · math.DS · 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{7EYBGWXX4JKL7YSBBVX5L6BYBA}

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	2026-05-18T04:03:32.647148Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f930135af7e254bfe2410d6fd5f838080e7c586a0b8b00e7a09422e9947beaa9

Aliases

arxiv: 1004.2422 · arxiv_version: 1004.2422v2 · doi: 10.48550/arxiv.1004.2422 · pith_short_12: 7EYBGWXX4JKL · pith_short_16: 7EYBGWXX4JKL7YSB · pith_short_8: 7EYBGWXX

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/7EYBGWXX4JKL7YSBBVX5L6BYBA \
  | 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: f930135af7e254bfe2410d6fd5f838080e7c586a0b8b00e7a09422e9947beaa9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f165889a22234370c13e8dfbba11717c1e38326c0bf061182b3583b53b006ac3",
    "cross_cats_sorted": [
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2010-04-14T15:42:09Z",
    "title_canon_sha256": "c106158fc891ace81ccd32ed1d4313d449292c521f3f7211452cfd8520e42fa2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.2422",
    "kind": "arxiv",
    "version": 2
  }
}