Pith Number

pith:W4IA2Z6L

pith:2023:W4IA2Z6LL5P7WTY573ZRZP3XP7

not attested not anchored not stored refs pending

CUQIpy: II. Computational uncertainty quantification for PDE-based inverse problems in Python

Amal M A Alghamdi, Babak M Afkham, Felipe Uribe, Jakob S J{\o}rgensen, Nicolai A B Riis, Per Christian Hansen, Silja L Christensen

arxiv:2305.16951 v2 · 2023-05-26 · math.NA · cs.MS · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W4IA2Z6LL5P7WTY573ZRZP3XP7}

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	2026-07-05T07:59:02.611552Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7100d67cb5f5ffb4f1dfef31cbf777fc941c157f4447a171ccb5d60db6c7bc2

Aliases

arxiv: 2305.16951 · arxiv_version: 2305.16951v2 · doi: 10.48550/arxiv.2305.16951 · pith_short_12: W4IA2Z6LL5P7 · pith_short_16: W4IA2Z6LL5P7WTY5 · pith_short_8: W4IA2Z6L

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/W4IA2Z6LL5P7WTY573ZRZP3XP7 \
  | 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: b7100d67cb5f5ffb4f1dfef31cbf777fc941c157f4447a171ccb5d60db6c7bc2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "75347d9099b82f4a5fca045f1bb69c89497e42802100fdf57a5e5070055d5653",
    "cross_cats_sorted": [
      "cs.MS",
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2023-05-26T14:03:04Z",
    "title_canon_sha256": "d21590a73a37ceb6a9c2a8997a7e2b7664bf7b9e66fce1313516c29c59c8781f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2305.16951",
    "kind": "arxiv",
    "version": 2
  }
}