Pith Number

pith:PYQGJZGN

pith:2011:PYQGJZGNWBRFOOKEBBW2PA4EI4

not attested not anchored not stored refs pending

Generalised purity as an entanglement measure for two- and three-well Bose-Hubbard models

C.V. Chianca, M.K. Olsen

arxiv:1104.3655 v1 · 2011-04-19 · 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{PYQGJZGNWBRFOOKEBBW2PA4EI4}

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	2026-05-18T04:23:55.856161Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e2064e4cdb062573944086da78384472692ed25548dde1cefb1b93d50f4a593

Aliases

arxiv: 1104.3655 · arxiv_version: 1104.3655v1 · doi: 10.48550/arxiv.1104.3655 · pith_short_12: PYQGJZGNWBRF · pith_short_16: PYQGJZGNWBRFOOKE · pith_short_8: PYQGJZGN

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/PYQGJZGNWBRFOOKEBBW2PA4EI4 \
  | 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: 7e2064e4cdb062573944086da78384472692ed25548dde1cefb1b93d50f4a593

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b2d253f36a923dd308badd60fe13b4ae08493aae9231801dedc5de72f82449eb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2011-04-19T07:03:23Z",
    "title_canon_sha256": "744e879c2e39c3be2dc511b85a5b8726e466f7b4d94be4a32e4a50442021db37"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.3655",
    "kind": "arxiv",
    "version": 1
  }
}