Pith Number

pith:MHF4PSRN

pith:2018:MHF4PSRNQFNKVT7KBFXFT6UYBN

not attested not anchored not stored refs pending

The Category of Von Neumann Algebras

Abraham A. Westerbaan

arxiv:1804.02203 v2 · 2018-04-06 · math.OA · cs.LO · math.CT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MHF4PSRNQFNKVT7KBFXFT6UYBN}

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	2026-05-17T23:50:07.342407Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

61cbc7ca2d815aaacfea096e59fa980b4d52b4562f343ee5ceeee30144cbc731

Aliases

arxiv: 1804.02203 · arxiv_version: 1804.02203v2 · doi: 10.48550/arxiv.1804.02203 · pith_short_12: MHF4PSRNQFNK · pith_short_16: MHF4PSRNQFNKVT7K · pith_short_8: MHF4PSRN

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/MHF4PSRNQFNKVT7KBFXFT6UYBN \
  | 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: 61cbc7ca2d815aaacfea096e59fa980b4d52b4562f343ee5ceeee30144cbc731

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93b614f866910bdede13ce495d486ebe6eb83e52e0f5b227847a6e6605f7cc17",
    "cross_cats_sorted": [
      "cs.LO",
      "math.CT"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2018-04-06T11:03:16Z",
    "title_canon_sha256": "aaef18add7054c322d75e7a6fd40bfc66b52576810bdca8be11fe5d9ee8b8920"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.02203",
    "kind": "arxiv",
    "version": 2
  }
}