Pith Number

pith:3ZW4S4RL

pith:2022:3ZW4S4RLXSC7DXWZYKYLI3UUOT

not attested not anchored not stored refs pending

Estimating and using information in inverse problems

Bart van Bloemen Waanders, Chris R. Johnson, Dennis K. Njeru, Wolfgang Bangerth

arxiv:2208.09095 v4 · 2022-08-18 · math.NA · cs.IT · cs.NA · math.AP · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3ZW4S4RLXSC7DXWZYKYLI3UUOT}

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	2026-07-05T10:12:12.347857Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de6dc9722bbc85f1ded9c2b0b46e9474d5785fce7c1231c9694f8a7e7e74ff53

Aliases

arxiv: 2208.09095 · arxiv_version: 2208.09095v4 · doi: 10.48550/arxiv.2208.09095 · pith_short_12: 3ZW4S4RLXSC7 · pith_short_16: 3ZW4S4RLXSC7DXWZ · pith_short_8: 3ZW4S4RL

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/3ZW4S4RLXSC7DXWZYKYLI3UUOT \
  | 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: de6dc9722bbc85f1ded9c2b0b46e9474d5785fce7c1231c9694f8a7e7e74ff53

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "507ca4f3f4a2d2a57d711e8be5f5c63291176a65eaf2d6cbd206b57a07b3f87d",
    "cross_cats_sorted": [
      "cs.IT",
      "cs.NA",
      "math.AP",
      "math.IT"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2022-08-18T23:45:32Z",
    "title_canon_sha256": "38e0cbe1ce36b02f0c91e7803b95d28d92a58750f4ea2b3f65d499d933fedb66"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2208.09095",
    "kind": "arxiv",
    "version": 4
  }
}