Pith Number

pith:QFWD2TYI

pith:2026:QFWD2TYIQM2S4B4HA7KIRSXTFO

not attested not anchored not stored refs pending

Information limits of photonic lantern wavefront sensing: a Fisher- and quantum-Fisher-information framework and its relation to Fourier-filtering sensitivity limits

Kalaga Madhav

arxiv:2607.29342 v1 · 2026-07-31 · astro-ph.IM · physics.optics · 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{QFWD2TYIQM2S4B4HA7KIRSXTFO}

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	2026-08-03T01:33:13.836819Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

816c3d4f0883352e078707d488caf32b847e7063c71af4d622db078f1862e5e8

Aliases

arxiv: 2607.29342 · arxiv_version: 2607.29342v1 · doi: 10.48550/arxiv.2607.29342 · pith_short_12: QFWD2TYIQM2S · pith_short_16: QFWD2TYIQM2S4B4H · pith_short_8: QFWD2TYI

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/QFWD2TYIQM2S4B4HA7KIRSXTFO \
  | 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: 816c3d4f0883352e078707d488caf32b847e7063c71af4d622db078f1862e5e8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50baf217558cfb27cc792b34bd65a102f5ccef1c6eb4843586fc4d4682f0e07b",
    "cross_cats_sorted": [
      "physics.optics",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2026-07-31T12:23:37Z",
    "title_canon_sha256": "122ccb77dfed79b47ee8c6220ada73191d724a89e8e255b48ead60352ccd8e08"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.29342",
    "kind": "arxiv",
    "version": 1
  }
}