Pith Number

pith:DR2S72DQ

pith:2009:DR2S72DQKGOGAIMQQ4N3O3ZVV7

not attested not anchored not stored refs pending

Special entangled quantum systems and the Freudenthal construction

P\'eter L\'evay, P\'eter Vrana

arxiv:0902.2269 v2 · 2009-02-13 · 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{DR2S72DQKGOGAIMQQ4N3O3ZVV7}

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	2026-05-18T02:14:48.012008Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c752fe870519c602190871bb76f35aff6537caf906ee4a8dc30c68d53a2749b

Aliases

arxiv: 0902.2269 · arxiv_version: 0902.2269v2 · doi: 10.48550/arxiv.0902.2269 · pith_short_12: DR2S72DQKGOG · pith_short_16: DR2S72DQKGOGAIMQ · pith_short_8: DR2S72DQ

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/DR2S72DQKGOGAIMQQ4N3O3ZVV7 \
  | 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: 1c752fe870519c602190871bb76f35aff6537caf906ee4a8dc30c68d53a2749b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cda0421031a8d625c7895e0f62f7fc430e426ad5d5e3e92c01253ec56282b9b5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-02-13T12:09:43Z",
    "title_canon_sha256": "11babd067d7081e5acf0b2014dda6744970a16b343dc6cde06ce6f099dff3083"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.2269",
    "kind": "arxiv",
    "version": 2
  }
}