Pith Number

pith:RU4QRWJX

pith:2015:RU4QRWJXPUQKRMCEY5QFPNJNHY

not attested not anchored not stored refs pending

Contextuality, Cohomology and Paradox

Kohei Kishida, Raymond Lal, Rui Soares Barbosa, Samson Abramsky, Shane Mansfield

arxiv:1502.03097 v2 · 2015-02-10 · quant-ph · cs.LO · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RU4QRWJXPUQKRMCEY5QFPNJNHY}

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	2026-05-18T00:12:01.172182Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8d3908d9377d20a8b044c76057b52d3e00da0813317ff67176036eeb70a8e1df

Aliases

arxiv: 1502.03097 · arxiv_version: 1502.03097v2 · doi: 10.48550/arxiv.1502.03097 · pith_short_12: RU4QRWJXPUQK · pith_short_16: RU4QRWJXPUQKRMCE · pith_short_8: RU4QRWJX

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/RU4QRWJXPUQKRMCEY5QFPNJNHY \
  | 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: 8d3908d9377d20a8b044c76057b52d3e00da0813317ff67176036eeb70a8e1df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5378e276f01adc8ccd53715d5ef920dc2d2b5fa11374bdd9e7a9b42710832ed4",
    "cross_cats_sorted": [
      "cs.LO",
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-02-10T21:00:13Z",
    "title_canon_sha256": "520846ecdcb710ce40b2664819c4b44bd52a8868020c1a5a10e262cfe9e0852e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.03097",
    "kind": "arxiv",
    "version": 2
  }
}