Pith Number

pith:OUHX63TF

pith:2011:OUHX63TFAXFTDBHX57ZAIRR3A5

not attested not anchored not stored refs pending

Residually finite actions and crossed products

David Kerr, Piotr W. Nowak

arxiv:1104.1216 v2 · 2011-04-06 · math.OA · 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{OUHX63TFAXFTDBHX57ZAIRR3A5}

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	2026-05-18T04:21:10.432938Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

750f7f6e6505cb3184f7eff204463b074986d4de17e27d687c48c25a7148a680

Aliases

arxiv: 1104.1216 · arxiv_version: 1104.1216v2 · doi: 10.48550/arxiv.1104.1216 · pith_short_12: OUHX63TFAXFT · pith_short_16: OUHX63TFAXFTDBHX · pith_short_8: OUHX63TF

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/OUHX63TFAXFTDBHX57ZAIRR3A5 \
  | 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: 750f7f6e6505cb3184f7eff204463b074986d4de17e27d687c48c25a7148a680

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e12fbc867936eef989984745badb732799463a6c3585424f1d86607a1987074",
    "cross_cats_sorted": [
      "math.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2011-04-06T23:51:16Z",
    "title_canon_sha256": "416cc2a20a843075d90e76ad601635f6b327ea1092f44a8f9e4cfbd592a80de5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.1216",
    "kind": "arxiv",
    "version": 2
  }
}