Pith Number

pith:PCFNCWOA

pith:2014:PCFNCWOAG6VMKWX2KKBXPYBONJ

not attested not anchored not stored refs pending

Quantum state tomography: Mean squared error matters, bias does not

Berthold-Georg Englert, Hui Khoon Ng, Jiangwei Shang

arxiv:1405.5350 v1 · 2014-05-21 · 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{PCFNCWOAG6VMKWX2KKBXPYBONJ}

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	2026-05-18T02:51:24.430048Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

788ad159c037aac55afa528377e02e6a5c1f770931f376b7b0b36601c7cd2d74

Aliases

arxiv: 1405.5350 · arxiv_version: 1405.5350v1 · doi: 10.48550/arxiv.1405.5350 · pith_short_12: PCFNCWOAG6VM · pith_short_16: PCFNCWOAG6VMKWX2 · pith_short_8: PCFNCWOA

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/PCFNCWOAG6VMKWX2KKBXPYBONJ \
  | 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: 788ad159c037aac55afa528377e02e6a5c1f770931f376b7b0b36601c7cd2d74

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "62e2ba8702f8e1d4a4f16cba8d9b8b7bd4396592b56b9731397eab36c808adc3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2014-05-21T09:50:23Z",
    "title_canon_sha256": "9d005de5845c8329be4b1f05bd709b82da7d92068cc01f151e2d8131a83dd5a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.5350",
    "kind": "arxiv",
    "version": 1
  }
}