Pith Number

pith:45INX6S6

pith:2008:45INX6S6T2HWHD66I66MABQYYA

not attested not anchored not stored refs pending

On Steepest-Descent-Kaczmarz Methods for Regularizing Systems of Nonlinear Ill-posed Equations

A. De Cezaro, A. Leitao, M. Haltmeier, O. Scherzer

arxiv:0801.3088 v3 · 2008-01-20 · math.NA · 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{45INX6S6T2HWHD66I66MABQYYA}

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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	2026-06-03T22:06:04.076404Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e750dbfa5e9e8f638fde47bcc00618c00fbde18a4920430e71c6d1d0f04a8bac

Aliases

arxiv: 0801.3088 · arxiv_version: 0801.3088v3 · doi: 10.48550/arxiv.0801.3088 · pith_short_12: 45INX6S6T2HW · pith_short_16: 45INX6S6T2HWHD66 · pith_short_8: 45INX6S6

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/45INX6S6T2HWHD66I66MABQYYA \
  | 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: e750dbfa5e9e8f638fde47bcc00618c00fbde18a4920430e71c6d1d0f04a8bac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a5fd784fe6a48e6aa59624e439c751288c67d61446482d638e9075630ccd1fe8",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2008-01-20T15:05:48Z",
    "title_canon_sha256": "e99e07b95f4304230f145415cb16a36218ae1284e88ce0472a9b685c195497b9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0801.3088",
    "kind": "arxiv",
    "version": 3
  }
}