Pith Number

pith:T3WJGWGH

pith:2015:T3WJGWGHS2PBX6J47DHYUPY76Y

not attested not anchored not stored refs pending

Robustness of incompatibility for quantum devices

Erkka Haapasalo

arxiv:1502.04881 v2 · 2015-02-17 · quant-ph · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{T3WJGWGHS2PBX6J47DHYUPY76Y}

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	2026-05-18T01:35:11.247108Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9eec9358c7969e1bf93cf8cf8a3f1ff614c038624339b372d5dd5df70f8ab1cd

Aliases

arxiv: 1502.04881 · arxiv_version: 1502.04881v2 · doi: 10.48550/arxiv.1502.04881 · pith_short_12: T3WJGWGHS2PB · pith_short_16: T3WJGWGHS2PBX6J4 · pith_short_8: T3WJGWGH

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/T3WJGWGHS2PBX6J47DHYUPY76Y \
  | 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: 9eec9358c7969e1bf93cf8cf8a3f1ff614c038624339b372d5dd5df70f8ab1cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ba75ca33268c5165fa6be8b7ebac0b5480933d16d9caad9627c175b6640ee90",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-02-17T13:10:52Z",
    "title_canon_sha256": "76eb72bb93ebb10a65620a115c3762cebbbba3c138a54509e13d22296b545572"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.04881",
    "kind": "arxiv",
    "version": 2
  }
}