Pith Number

pith:7TDYEXL2

pith:2013:7TDYEXL2R6RRGWWMSLMRTLPK5Z

not attested not anchored not stored refs pending

Classical systems can be contextual too: Analogue of the Mermin-Peres square

Pawel Blasiak

arxiv:1310.4990 v3 · 2013-10-18 · quant-ph · physics.class-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{7TDYEXL2R6RRGWWMSLMRTLPK5Z}

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	2026-05-18T02:26:18.714383Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fcc7825d7a8fa3135acc92d919adeaee4d25aced1fdd33466704837dcbc7e5e4

Aliases

arxiv: 1310.4990 · arxiv_version: 1310.4990v3 · doi: 10.48550/arxiv.1310.4990 · pith_short_12: 7TDYEXL2R6RR · pith_short_16: 7TDYEXL2R6RRGWWM · pith_short_8: 7TDYEXL2

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/7TDYEXL2R6RRGWWMSLMRTLPK5Z \
  | 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: fcc7825d7a8fa3135acc92d919adeaee4d25aced1fdd33466704837dcbc7e5e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ecbd70babb5b58119a6bf0b9fb00f74d042de3a2e28cd8300336124c5c17886d",
    "cross_cats_sorted": [
      "physics.class-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-10-18T12:22:08Z",
    "title_canon_sha256": "57ca89551b31781b6b442031185ca8b97c2c79c508cc3c8ce42d5624a1cc7e7d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.4990",
    "kind": "arxiv",
    "version": 3
  }
}