Pith Number

pith:KDERB33N

pith:2009:KDERB33N5QF5MHBQ2F3WEREWVH

not attested not anchored not stored refs pending

Effective Actions for Ensemble Data Assimilation

Henry D. I. Abarbanel

arxiv:0908.2045 v1 · 2009-08-14 · nlin.CD

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KDERB33N5QF5MHBQ2F3WEREWVH}

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	2026-05-18T02:12:34.293274Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

50c910ef6dec0bd61c30d177624496a9ce366d9aa1244f5038518d67be4b644f

Aliases

arxiv: 0908.2045 · arxiv_version: 0908.2045v1 · doi: 10.48550/arxiv.0908.2045 · pith_short_12: KDERB33N5QF5 · pith_short_16: KDERB33N5QF5MHBQ · pith_short_8: KDERB33N

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/KDERB33N5QF5MHBQ2F3WEREWVH \
  | 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: 50c910ef6dec0bd61c30d177624496a9ce366d9aa1244f5038518d67be4b644f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2fb81979ca40546cb51f2bc6afae81ff12fcb54277cf5252381874218f37acf4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.CD",
    "submitted_at": "2009-08-14T11:46:14Z",
    "title_canon_sha256": "b7e90c9673bce7867f794974d7cadc8464dc94ba33e0f007731175a635c38415"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.2045",
    "kind": "arxiv",
    "version": 1
  }
}