Pith Number

pith:TREIJKKW

pith:2004:TREIJKKWGRMP4KQ2H72PBGHFJZ

not attested not anchored not stored refs pending

Extremal covariant POVM's

Giacomo Mauro D'Ariano, Giulio Chiribella

arxiv:quant-ph/0406237 v1 · 2004-06-30 · 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{TREIJKKWGRMP4KQ2H72PBGHFJZ}

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	2026-07-04T15:00:17.180561Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9c4884a9563458fe2a1a3ff4f098e54e5aac735aa87ff8a16c0e7371af4583fe

Aliases

arxiv: quant-ph/0406237 · arxiv_version: quant-ph/0406237v1 · doi: 10.48550/arxiv.quant-ph/0406237 · pith_short_12: TREIJKKWGRMP · pith_short_16: TREIJKKWGRMP4KQ2 · pith_short_8: TREIJKKW

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/TREIJKKWGRMP4KQ2H72PBGHFJZ \
  | 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: 9c4884a9563458fe2a1a3ff4f098e54e5aac735aa87ff8a16c0e7371af4583fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a2ecced61dea4e26da25b8c4a69d78570a80e24d6caf655a320e1f0c622ca07",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2004-06-30T16:54:09Z",
    "title_canon_sha256": "3894543bf18c3a2ed9366646055e2b380d29027d2c920b382dae4699cd21542d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0406237",
    "kind": "arxiv",
    "version": 1
  }
}