Pith Number

pith:JZU3JOEK

pith:2024:JZU3JOEKVA7VRJ6FRDW4KFQ4MB

not attested not anchored not stored refs pending

Incremental data compression for PDE-constrained optimization with a data assimilation application

John R. Singler, Xiaoming He, Xuejian Li

arxiv:2404.09323 v3 · 2024-04-14 · math.OC · math.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{JZU3JOEKVA7VRJ6FRDW4KFQ4MB}

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	2026-07-05T08:50:55.614882Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4e69b4b88aa83f58a7c588edc5161c604425d9b0303750b0f0c90dd866b6c03a

Aliases

arxiv: 2404.09323 · arxiv_version: 2404.09323v3 · doi: 10.48550/arxiv.2404.09323 · pith_short_12: JZU3JOEKVA7V · pith_short_16: JZU3JOEKVA7VRJ6F · pith_short_8: JZU3JOEK

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/JZU3JOEKVA7VRJ6FRDW4KFQ4MB \
  | 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: 4e69b4b88aa83f58a7c588edc5161c604425d9b0303750b0f0c90dd866b6c03a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d6f1436b383d45270577bfb793c489a81ee37d6dc956fee375bd7b8a57c17880",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2024-04-14T18:46:54Z",
    "title_canon_sha256": "ea1411ad1269fab558d3cda42290cc4022cefc23b07dd84ca36c93878f858f54"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2404.09323",
    "kind": "arxiv",
    "version": 3
  }
}