Pith Number

pith:LZ5GYNQ6

pith:2019:LZ5GYNQ6D55CIH5N32UJA4TAWX

not attested not anchored not stored refs pending

The one clean qubit model without entanglement is classically simulable

Chris Cade, Mithuna Yoganathan

arxiv:1907.08224 v1 · 2019-07-18 · 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{LZ5GYNQ6D55CIH5N32UJA4TAWX}

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	2026-05-17T23:40:10.497734Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5e7a6c361e1f7a241faddea8907260b5dc1326a9a5de7e4afaad08b41b2ba0e9

Aliases

arxiv: 1907.08224 · arxiv_version: 1907.08224v1 · doi: 10.48550/arxiv.1907.08224 · pith_short_12: LZ5GYNQ6D55C · pith_short_16: LZ5GYNQ6D55CIH5N · pith_short_8: LZ5GYNQ6

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/LZ5GYNQ6D55CIH5N32UJA4TAWX \
  | 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: 5e7a6c361e1f7a241faddea8907260b5dc1326a9a5de7e4afaad08b41b2ba0e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0e44c9437234c87acbc3ef1249884e29e2d48bc51b84ed495d8bc0b448d43fc6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-07-18T18:05:06Z",
    "title_canon_sha256": "fc095df35f3ce0678427fd820dc96d243177f11d8c77f65e86b085c510bee2fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.08224",
    "kind": "arxiv",
    "version": 1
  }
}