Pith Number

pith:SWQ54CHJ

pith:2003:SWQ54CHJVZ6VERKEQY6WCM6V6Z

not attested not anchored not stored refs pending

Tensor of coherences parameterization of multiqubit density operators for entanglement characterization

Claudio Altafini

arxiv:quant-ph/0308019 v1 · 2003-08-04 · 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{SWQ54CHJVZ6VERKEQY6WCM6V6Z}

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	2026-05-18T00:01:39.614559Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

95a1de08e9ae7d524544863d6133d5f668149d8ad12b326125cb82f4ce643fb3

Aliases

arxiv: quant-ph/0308019 · arxiv_version: quant-ph/0308019v1 · doi: 10.48550/arxiv.quant-ph/0308019 · pith_short_12: SWQ54CHJVZ6V · pith_short_16: SWQ54CHJVZ6VERKE · pith_short_8: SWQ54CHJ

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/SWQ54CHJVZ6VERKEQY6WCM6V6Z \
  | 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: 95a1de08e9ae7d524544863d6133d5f668149d8ad12b326125cb82f4ce643fb3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fca8d6ec89325ff279b94b47674ae1ae9b0a56fb789e1bae29500624639c9086",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2003-08-04T13:55:04Z",
    "title_canon_sha256": "691d60148059903927dcdfc2be4278cd52102c55d7ba4e7b4d4ba12163d8d2d8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0308019",
    "kind": "arxiv",
    "version": 1
  }
}