Pith Number

pith:4V4JRQUA

pith:2016:4V4JRQUACNCL76JPZMWPMYJ6EC

not attested not anchored not stored refs pending

Expectation Maximization and the retrieval of the atmospheric extinction coefficients by inversion of Raman lidar data

Alberto Sorrentino, Alessia Sannino, Anna Maria Massone, Antonella Boselli, Michele Piana, Nicola Spinelli, Sara Garbarino, Xuan Wang

arxiv:1608.07841 v1 · 2016-08-28 · math.NA · physics.ao-ph · 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{4V4JRQUACNCL76JPZMWPMYJ6EC}

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	2026-05-18T01:04:10.121163Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e57898c2801344bff92fcb2cf6613e20b5627183c2efa992bab262276782ed19

Aliases

arxiv: 1608.07841 · arxiv_version: 1608.07841v1 · doi: 10.48550/arxiv.1608.07841 · pith_short_12: 4V4JRQUACNCL · pith_short_16: 4V4JRQUACNCL76JP · pith_short_8: 4V4JRQUA

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/4V4JRQUACNCL76JPZMWPMYJ6EC \
  | 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: e57898c2801344bff92fcb2cf6613e20b5627183c2efa992bab262276782ed19

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b68f83253d4e05bc41d5329135331f8764278cbc01aa6968fe868613ede428b",
    "cross_cats_sorted": [
      "physics.ao-ph",
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2016-08-28T18:16:30Z",
    "title_canon_sha256": "8c3ff347867d580e68c073def7fe8c6f3b0c6b02042cef6271c20214879757d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.07841",
    "kind": "arxiv",
    "version": 1
  }
}