Pith Number

pith:62MPNGEB

pith:2009:62MPNGEBPDAWUYH7OGV4ZQWHAX

not attested not anchored not stored refs pending

State-independent quantum violation of noncontextuality in four dimensional space using five observables and two settings

Alok Kumar Pan, Dipankar Home

arxiv:0911.4172 v1 · 2009-11-21 · 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{62MPNGEBPDAWUYH7OGV4ZQWHAX}

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	2026-05-18T02:10:37.844694Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f698f6988178c16a60ff71abccc2c705cda7cd96276ddad97da349eababbe572

Aliases

arxiv: 0911.4172 · arxiv_version: 0911.4172v1 · doi: 10.48550/arxiv.0911.4172 · pith_short_12: 62MPNGEBPDAW · pith_short_16: 62MPNGEBPDAWUYH7 · pith_short_8: 62MPNGEB

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/62MPNGEBPDAWUYH7OGV4ZQWHAX \
  | 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: f698f6988178c16a60ff71abccc2c705cda7cd96276ddad97da349eababbe572

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bec462e3e117dacedb2854cd8fd138b83750e38b33207ca31c68a697605b6455",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-11-21T11:13:01Z",
    "title_canon_sha256": "c69872e8f96564bfe01e43dcaecba91eb2a054bd399e901724ddc2c9397d0b4b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.4172",
    "kind": "arxiv",
    "version": 1
  }
}