Pith Number

pith:Z4QQZBXR

pith:2009:Z4QQZBXR7U7ASONMGA3QUXBTH6

not attested not anchored not stored refs pending

Two dimensional characterization of space-momentum entangled photon pairs

Dietmar Korn, Dirk Puhlmann, Martin Ostermeyer

arxiv:0905.4830 v1 · 2009-05-29 · 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{Z4QQZBXR7U7ASONMGA3QUXBTH6}

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	2026-05-18T02:13:30.814856Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf210c86f1fd3e0939ac30370a5c333f8cda221bd1b8b4bef9f251f2d992744d

Aliases

arxiv: 0905.4830 · arxiv_version: 0905.4830v1 · doi: 10.48550/arxiv.0905.4830 · pith_short_12: Z4QQZBXR7U7A · pith_short_16: Z4QQZBXR7U7ASONM · pith_short_8: Z4QQZBXR

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/Z4QQZBXR7U7ASONMGA3QUXBTH6 \
  | 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: cf210c86f1fd3e0939ac30370a5c333f8cda221bd1b8b4bef9f251f2d992744d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d37f905d148f6558f270241b85082f448c45b570af72de84ecae82593851457a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-05-29T11:08:10Z",
    "title_canon_sha256": "1325fbcb813d8c32bcb93acf178d26123cc71f51063e8c06015e225dc8febec9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.4830",
    "kind": "arxiv",
    "version": 1
  }
}