Pith Number

pith:Y5JNZEUS

pith:2011:Y5JNZEUSZM3OQSFTLJNYZGT256

not attested not anchored not stored refs pending

On the history of the isomorphism problem of dynamical systems with special regard to von Neumann's contribution

Charlotte Werndl, Miklos Redei

arxiv:1110.0625 v1 · 2011-10-04 · math.HO · math.DS · physics.hist-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y5JNZEUSZM3OQSFTLJNYZGT256}

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	2026-05-18T04:11:41.340830Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c752dc9292cb36e848b35a5b8c9a7aef81c70d225274a1bef684e47d4de64e1f

Aliases

arxiv: 1110.0625 · arxiv_version: 1110.0625v1 · doi: 10.48550/arxiv.1110.0625 · pith_short_12: Y5JNZEUSZM3O · pith_short_16: Y5JNZEUSZM3OQSFT · pith_short_8: Y5JNZEUS

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/Y5JNZEUSZM3OQSFTLJNYZGT256 \
  | 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: c752dc9292cb36e848b35a5b8c9a7aef81c70d225274a1bef684e47d4de64e1f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ff43b18e234428af4cc18c9864630ae766c59964c1554f863c795ede611f4cd",
    "cross_cats_sorted": [
      "math.DS",
      "physics.hist-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2011-10-04T10:01:31Z",
    "title_canon_sha256": "f09123a089d020e922ec98b4063df1e2592dc2dbc91b5ee63cc17e2ce48a4c0c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.0625",
    "kind": "arxiv",
    "version": 1
  }
}