Pith Number

pith:WW4UI4PV

pith:2009:WW4UI4PV2MQHZ6MZ5M4KHGDPRY

not attested not anchored not stored refs pending

Non-critical squeezing in 2-transverse-mode optical parametric oscillators

Alejandro Romanelli, Carlos Navarrete-Benlloch, Eugenio Rold\'an, Germ\'an J. de Valc\'arcel

arxiv:0904.0049 v2 · 2009-04-01 · 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{WW4UI4PV2MQHZ6MZ5M4KHGDPRY}

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	2026-05-18T04:08:44.971276Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b5b94471f5d3207cf999eb38a3986f8e2a14963a558f354fd34931551683c3f3

Aliases

arxiv: 0904.0049 · arxiv_version: 0904.0049v2 · doi: 10.48550/arxiv.0904.0049 · pith_short_12: WW4UI4PV2MQH · pith_short_16: WW4UI4PV2MQHZ6MZ · pith_short_8: WW4UI4PV

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/WW4UI4PV2MQHZ6MZ5M4KHGDPRY \
  | 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: b5b94471f5d3207cf999eb38a3986f8e2a14963a558f354fd34931551683c3f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5bc3df35dd71c5fdf522aa2503f2f46250725edb0792a22f9ed2f7cdc52dc502",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-04-01T01:47:24Z",
    "title_canon_sha256": "802446a387a2fd1105e590ec9fdf6808cee97749f89feebabe47dfb5ae963fd8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.0049",
    "kind": "arxiv",
    "version": 2
  }
}