Pith Number

pith:KSWYAACO

pith:2020:KSWYAACOVXSL5L6R4FHUWLXPIC

not attested not anchored not stored refs pending

Relaxed Gauss-Newton methods with applications to electrical impedance tomography

Aku Sepp\"anen, Jyrki Jauhiainen, Petri Kuusela, Tuomo Valkonen

arxiv:2002.08044 v4 · 2020-02-19 · math.OC · cs.NA · math.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{KSWYAACOVXSL5L6R4FHUWLXPIC}

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	2026-07-05T01:31:24.828817Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

54ad80004eade4beafd1e14f4b2eef40a00ff64af227ea7da94aab8cd03602a4

Aliases

arxiv: 2002.08044 · arxiv_version: 2002.08044v4 · doi: 10.48550/arxiv.2002.08044 · pith_short_12: KSWYAACOVXSL · pith_short_16: KSWYAACOVXSL5L6R · pith_short_8: KSWYAACO

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/KSWYAACOVXSL5L6R4FHUWLXPIC \
  | 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: 54ad80004eade4beafd1e14f4b2eef40a00ff64af227ea7da94aab8cd03602a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d40dc9b239382773f0f63fb3ce387ee0fe39cba115750598a8d4bf00fe1ab543",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2020-02-19T08:10:18Z",
    "title_canon_sha256": "3d97399c7c92b6c1ad5dbf8745efc250b52762326f023c5e1c061a7316093198"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.08044",
    "kind": "arxiv",
    "version": 4
  }
}