Pith Number

pith:JPMQ4UT4

pith:2010:JPMQ4UT4QB3MWWZGUCDGRWC3CM

not attested not anchored not stored refs pending

A variant of Peres-Mermin proof for testing noncontextual realist models

Alok Kumar Pan

arxiv:1005.2402 v1 · 2010-05-13 · 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{JPMQ4UT4QB3MWWZGUCDGRWC3CM}

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	2026-05-18T02:07:33.119256Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4bd90e527c8076cb5b26a08668d85b132c68bb568c2f6754c919e4679eeacdb8

Aliases

arxiv: 1005.2402 · arxiv_version: 1005.2402v1 · doi: 10.48550/arxiv.1005.2402 · pith_short_12: JPMQ4UT4QB3M · pith_short_16: JPMQ4UT4QB3MWWZG · pith_short_8: JPMQ4UT4

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/JPMQ4UT4QB3MWWZGUCDGRWC3CM \
  | 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: 4bd90e527c8076cb5b26a08668d85b132c68bb568c2f6754c919e4679eeacdb8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7903933eb34df5e2658e2b84e1e4b5affb34a5a5a6df885ddc400c6e6ef8321a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2010-05-13T19:44:43Z",
    "title_canon_sha256": "5474d0246a71cfc6b75fb61a18cdae64c6dc9408a018e1081ff8ffffd1b9e288"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.2402",
    "kind": "arxiv",
    "version": 1
  }
}