Pith Number

pith:NEJ363VU

pith:2012:NEJ363VUAC4M7H5MFQQQAVLJ5C

not attested not anchored not stored refs pending

Active optics: deformable mirrors with a minimum number of actuators

Emmanuel Hugot, Marc Ferrari, Marie Laslandes

arxiv:1209.2685 v1 · 2012-09-12 · astro-ph.IM · 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{NEJ363VUAC4M7H5MFQQQAVLJ5C}

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	2026-05-18T03:45:42.375071Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6913bf6eb400b8cf9fac2c21005569e885d1c39b86bcff8848d0655623d9d952

Aliases

arxiv: 1209.2685 · arxiv_version: 1209.2685v1 · doi: 10.48550/arxiv.1209.2685 · pith_short_12: NEJ363VUAC4M · pith_short_16: NEJ363VUAC4M7H5M · pith_short_8: NEJ363VU

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/NEJ363VUAC4M7H5MFQQQAVLJ5C \
  | 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: 6913bf6eb400b8cf9fac2c21005569e885d1c39b86bcff8848d0655623d9d952

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c571c1e7d002b3c381ba9dd0c00764469ada32b2daa9f1db598b2552403bbb9f",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2012-09-12T18:35:08Z",
    "title_canon_sha256": "c2932e66d051ccc5429d73fb85655679de87efbb195f28e19fa2e69f6224c28a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.2685",
    "kind": "arxiv",
    "version": 1
  }
}