Pith Number

pith:2G42UQU6

pith:2025:2G42UQU6GQ7QFGHIFX26TYA3B7

not attested not anchored not stored refs pending

An analysis of Wigner's friend in the framework of quantum mechanics based on the principle of typicality

Kohtaro Tadaki

arxiv:2509.07828 v3 · 2025-09-09 · quant-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{2G42UQU6GQ7QFGHIFX26TYA3B7}

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	2026-05-22T02:04:36.844725Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1b9aa429e343f0298e82df5e9e01b0fcccca391db1a9c5a0d97a4ae4e6238aa

Aliases

arxiv: 2509.07828 · arxiv_version: 2509.07828v3 · doi: 10.48550/arxiv.2509.07828 · pith_short_12: 2G42UQU6GQ7Q · pith_short_16: 2G42UQU6GQ7QFGHI · pith_short_8: 2G42UQU6

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/2G42UQU6GQ7QFGHIFX26TYA3B7 \
  | 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: d1b9aa429e343f0298e82df5e9e01b0fcccca391db1a9c5a0d97a4ae4e6238aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c198d8e59f52264aa0e37cf46dea8cb95a77199327bf6a602f7e404e2800f531",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2025-09-09T15:06:58Z",
    "title_canon_sha256": "8720bc8cacc1831effd1c3f3c41f6bd656b75d677123fc18aee24fe9173a16e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.07828",
    "kind": "arxiv",
    "version": 3
  }
}