Pith Number

pith:EUVV3H6H

pith:2009:EUVV3H6HCKYTZMYGGX43WFUFZB

not attested not anchored not stored refs pending

Simple Fourier optics formalism for high angular resolution systems and nulling interferometry

Francois Henault

arxiv:0904.3888 v2 · 2009-04-24 · physics.optics · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EUVV3H6HCKYTZMYGGX43WFUFZB}

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	2026-05-18T01:22:44.303227Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

252b5d9fc712b13cb30635f9bb1685c85d52b2261c979477a8056b4bc600e686

Aliases

arxiv: 0904.3888 · arxiv_version: 0904.3888v2 · doi: 10.48550/arxiv.0904.3888 · pith_short_12: EUVV3H6HCKYT · pith_short_16: EUVV3H6HCKYTZMYG · pith_short_8: EUVV3H6H

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/EUVV3H6HCKYTZMYGGX43WFUFZB \
  | 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: 252b5d9fc712b13cb30635f9bb1685c85d52b2261c979477a8056b4bc600e686

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ec377be11cf785fd0fec21719b97ed93d635590c8140c7d6e12237fcafb9f04",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2009-04-24T14:55:46Z",
    "title_canon_sha256": "869614f6894faf138629251cf95b1b3ab635e3e39c75428537b0e4bef91fb345"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.3888",
    "kind": "arxiv",
    "version": 2
  }
}