Pith Number

pith:I4LMBVDR

pith:2015:I4LMBVDR2EC2QQFCNTPWU72Q2J

not attested not anchored not stored refs pending

On Hidden Variables: Value and Expectation No-Go Theorems

(2) Microsoft Research), Andreas Blass (1), Yuri Gurevich (2) ((1) University of Michigan

arxiv:1509.06896 v2 · 2015-09-23 · 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{I4LMBVDR2EC2QQFCNTPWU72Q2J}

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	2026-05-18T00:19:31.281139Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4716c0d471d105a840a26cdf6a7f50d27ebce35c9efa748d0ac28785d2b52e9a

Aliases

arxiv: 1509.06896 · arxiv_version: 1509.06896v2 · doi: 10.48550/arxiv.1509.06896 · pith_short_12: I4LMBVDR2EC2 · pith_short_16: I4LMBVDR2EC2QQFC · pith_short_8: I4LMBVDR

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/I4LMBVDR2EC2QQFCNTPWU72Q2J \
  | 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: 4716c0d471d105a840a26cdf6a7f50d27ebce35c9efa748d0ac28785d2b52e9a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc9ce7ead11cf1d3a5645a49e032322968f8243749deeced5fc31037117a35da",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-09-23T09:17:33Z",
    "title_canon_sha256": "485a84e900fea9e69c6a9add34c6fd85534bea6155faf1c02f00191663243999"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.06896",
    "kind": "arxiv",
    "version": 2
  }
}