Pith Number

pith:SDR34OWY

pith:2014:SDR34OWY5JB5VCIU5DLRLCEJDE

not attested not anchored not stored refs pending

Iterative regularization for ensemble data assimilation in reservoir models

Marco A. Iglesias

arxiv:1401.5375 v2 · 2014-01-21 · math.NA · stat.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SDR34OWY5JB5VCIU5DLRLCEJDE}

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	2026-05-18T02:49:09.819411Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90e3be3ad8ea43da8914e8d7158889193ce63ea59ef50260b0bb5e6dcd902cfa

Aliases

arxiv: 1401.5375 · arxiv_version: 1401.5375v2 · doi: 10.48550/arxiv.1401.5375 · pith_short_12: SDR34OWY5JB5 · pith_short_16: SDR34OWY5JB5VCIU · pith_short_8: SDR34OWY

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/SDR34OWY5JB5VCIU5DLRLCEJDE \
  | 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: 90e3be3ad8ea43da8914e8d7158889193ce63ea59ef50260b0bb5e6dcd902cfa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "398af3a9ddaca559d80ce4c6b76b51fc0b44d41982d1abd8550066e5a7b750bc",
    "cross_cats_sorted": [
      "stat.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-01-21T16:31:49Z",
    "title_canon_sha256": "f1ec243d74aedbcf30272e1637378a14ad44fd0dfc823f0ce167a958563d4bd2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.5375",
    "kind": "arxiv",
    "version": 2
  }
}