Pith Number

pith:QEA7LYZ2

pith:2004:QEA7LYZ2CFVZSR5R6VLVERVHOC

not attested not anchored not stored refs pending

Unambiguous discrimination between quantum mixed states

Mingsheng Ying, Runyao Duan, Yuan Feng

arxiv:quant-ph/0403147 v2 · 2004-03-20 · 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{QEA7LYZ2CFVZSR5R6VLVERVHOC}

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	2026-07-04T16:50:14.919005Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8101f5e33a116b9947b1f5575246a770b5fc75f0dd9e43dc913265224e4192ad

Aliases

arxiv: quant-ph/0403147 · arxiv_version: quant-ph/0403147v2 · doi: 10.48550/arxiv.quant-ph/0403147 · pith_short_12: QEA7LYZ2CFVZ · pith_short_16: QEA7LYZ2CFVZSR5R · pith_short_8: QEA7LYZ2

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/QEA7LYZ2CFVZSR5R6VLVERVHOC \
  | 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: 8101f5e33a116b9947b1f5575246a770b5fc75f0dd9e43dc913265224e4192ad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0990ee78bd858c08cc6738dbdb41f2a900b0675818c393cf71c4b5e317b257d6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2004-03-20T09:35:21Z",
    "title_canon_sha256": "55ea79df053bdda8d6c9f7a081074ea96c77193be5b643aabf98e13992ccbdf3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0403147",
    "kind": "arxiv",
    "version": 2
  }
}