Pith Number

pith:7RCAW7MR

pith:2019:7RCAW7MR24DP5TA5QZQUWR74F2

not attested not anchored not stored refs pending

Open projections and Murray-von Neumann equivalence

Masayoshi Kaneda, Thomas Schick

arxiv:1904.12208 v1 · 2019-04-27 · math.OA · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7RCAW7MR24DP5TA5QZQUWR74F2}

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	2026-05-17T23:47:38.678438Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc440b7d91d706fecc1d86614b47fc2eb9d9c42c9de13d457922308f35d6c9e0

Aliases

arxiv: 1904.12208 · arxiv_version: 1904.12208v1 · doi: 10.48550/arxiv.1904.12208 · pith_short_12: 7RCAW7MR24DP · pith_short_16: 7RCAW7MR24DP5TA5 · pith_short_8: 7RCAW7MR

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/7RCAW7MR24DP5TA5QZQUWR74F2 \
  | 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: fc440b7d91d706fecc1d86614b47fc2eb9d9c42c9de13d457922308f35d6c9e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d9cedb2e42cfc870483a6ae410bac0bc1b72cda1d445de38a17b4f87de9f65a",
    "cross_cats_sorted": [
      "math.FA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2019-04-27T20:33:18Z",
    "title_canon_sha256": "862adc9627537f4754b801c61cb5f717ba6b719fe6392fd4dd0e6b31cfe512d5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.12208",
    "kind": "arxiv",
    "version": 1
  }
}