Pith Number

pith:VJK5FNT5

pith:2012:VJK5FNT5QL6SI5NE3NJBP2NTNR

not attested not anchored not stored refs pending

Variational Downscaling, Fusion and Assimilation of Hydrometeorological States via Regularized Estimation

Ardeshir Mohammad Ebtehaj, Efi Foufoula-Georgiou

arxiv:1210.0854 v1 · 2012-10-02 · physics.data-an · math-ph · math.MP · physics.ao-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{VJK5FNT5QL6SI5NE3NJBP2NTNR}

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	2026-05-18T02:43:00.909730Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa55d2b67d82fd2475a4db5217e9b36c5b4eb133617f5322c35d03022979cf84

Aliases

arxiv: 1210.0854 · arxiv_version: 1210.0854v1 · doi: 10.48550/arxiv.1210.0854 · pith_short_12: VJK5FNT5QL6S · pith_short_16: VJK5FNT5QL6SI5NE · pith_short_8: VJK5FNT5

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/VJK5FNT5QL6SI5NE3NJBP2NTNR \
  | 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: aa55d2b67d82fd2475a4db5217e9b36c5b4eb133617f5322c35d03022979cf84

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df36f73316a84475fc6999cb22a5930b66750c5183f93441994438c7252dec01",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP",
      "physics.ao-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.data-an",
    "submitted_at": "2012-10-02T17:42:49Z",
    "title_canon_sha256": "c57c94c34c051e4b2540f175898feb21ea4f32a58999a62bb40a41a04dd74cd7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.0854",
    "kind": "arxiv",
    "version": 1
  }
}