Pith Number

pith:PORRBVL2

pith:2013:PORRBVL2U7Q33LVLIMTHHCUV3R

not attested not anchored not stored refs pending

Geometric quantum discord with Bures distance

Dominique Spehner, Miguel Orszag

arxiv:1304.3334 v4 · 2013-04-11 · 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{PORRBVL2U7Q33LVLIMTHHCUV3R}

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	2026-05-18T03:04:08.446845Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ba310d57aa7e1bdaeab4326738a95dc43160ba4faf58faf05db43c6de886dd7

Aliases

arxiv: 1304.3334 · arxiv_version: 1304.3334v4 · doi: 10.48550/arxiv.1304.3334 · pith_short_12: PORRBVL2U7Q3 · pith_short_16: PORRBVL2U7Q33LVL · pith_short_8: PORRBVL2

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/PORRBVL2U7Q33LVLIMTHHCUV3R \
  | 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: 7ba310d57aa7e1bdaeab4326738a95dc43160ba4faf58faf05db43c6de886dd7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ccc83fdddffdb7a8536f9860fdb6ee88645e942e32ad89d8f1c965fe0ad92b2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-04-11T15:10:57Z",
    "title_canon_sha256": "602f8395643a48eefc0dfbee676b27fc56606d6d0159ed4afbb430e15049e892"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.3334",
    "kind": "arxiv",
    "version": 4
  }
}