Pith Number

pith:EUQKPNEM

pith:2017:EUQKPNEMLB37BCWRW2GVRVQDQT

not attested not anchored not stored refs pending

A reduced order Kalman Filter model for sequential Data Assimilation of turbulent flows

Alexandre Poux, Marcello Meldi

arxiv:1702.06469 v1 · 2017-02-21 · physics.flu-dyn

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EUQKPNEMLB37BCWRW2GVRVQDQT}

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	2026-05-18T00:50:14.050530Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2520a7b48c5877f08ad1b68d58d60384e5264e0f13f6e79642b89d86861fb336

Aliases

arxiv: 1702.06469 · arxiv_version: 1702.06469v1 · doi: 10.48550/arxiv.1702.06469 · pith_short_12: EUQKPNEMLB37 · pith_short_16: EUQKPNEMLB37BCWR · pith_short_8: EUQKPNEM

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/EUQKPNEMLB37BCWRW2GVRVQDQT \
  | 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: 2520a7b48c5877f08ad1b68d58d60384e5264e0f13f6e79642b89d86861fb336

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f0e09dd8d4eca518c8662219def13a616128c05f87d320fc8145b6091885f0c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2017-02-21T16:29:55Z",
    "title_canon_sha256": "39f55b88f6a9e749beaa0d132ae691eaa6b1dcaba434cbdc474c4595c70abee4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.06469",
    "kind": "arxiv",
    "version": 1
  }
}