Pith Number

pith:4WOXAAKO

pith:2013:4WOXAAKOPSAYLPSNJQ3637B7RK

not attested not anchored not stored refs pending

Computing matrix inversion with optical networks

Cesare Soci, Kan Wu, Nikolay I. Zheludev, Perry Ping Shum

arxiv:1309.3820 v1 · 2013-09-16 · physics.optics

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4WOXAAKOPSAYLPSNJQ3637B7RK}

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	2026-05-18T01:47:41.656925Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e59d70014e7c8185be4d4c37edfc3f8a890a0608c5aba6bc0fa5269fb07dbe3a

Aliases

arxiv: 1309.3820 · arxiv_version: 1309.3820v1 · doi: 10.48550/arxiv.1309.3820 · pith_short_12: 4WOXAAKOPSAY · pith_short_16: 4WOXAAKOPSAYLPSN · pith_short_8: 4WOXAAKO

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/4WOXAAKOPSAYLPSNJQ3637B7RK \
  | 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: e59d70014e7c8185be4d4c37edfc3f8a890a0608c5aba6bc0fa5269fb07dbe3a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "171fde8010ea4000d654c781d4df3693f16fbedea108d48138b835b5212c4e3b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2013-09-16T03:22:38Z",
    "title_canon_sha256": "01716da3d5f358bc9de4f56f3eaa55a7dec138f54703af3800a2efbd8df38934"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.3820",
    "kind": "arxiv",
    "version": 1
  }
}