Pith Number

pith:A4W4DF2T

pith:2011:A4W4DF2TXQQ3UZXQGWP7UYUM7I

not attested not anchored not stored refs pending

Local Analysis of Inverse Problems: H\"{o}lder Stability and Iterative Reconstruction

Lingyun Qiu, Maarten V. de Hoop, Otmar Scherzer

arxiv:1108.3570 v2 · 2011-08-17 · math.FA · 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{A4W4DF2TXQQ3UZXQGWP7UYUM7I}

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	2026-05-18T02:00:51.119942Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

072dc19753bc21ba66f0359ffa628cfa2a1774a72ce8d0f85deb00e9a76afff5

Aliases

arxiv: 1108.3570 · arxiv_version: 1108.3570v2 · doi: 10.48550/arxiv.1108.3570 · pith_short_12: A4W4DF2TXQQ3 · pith_short_16: A4W4DF2TXQQ3UZXQ · pith_short_8: A4W4DF2T

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/A4W4DF2TXQQ3UZXQGWP7UYUM7I \
  | 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: 072dc19753bc21ba66f0359ffa628cfa2a1774a72ce8d0f85deb00e9a76afff5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa193872699f17aa5193965f21755782002a1542ecb2e1daf5033e5701744cb1",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2011-08-17T20:28:25Z",
    "title_canon_sha256": "0b3e8b50f3c0d10e1df3c35868a6cd31dd972d166e91103f38a959193e1891e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.3570",
    "kind": "arxiv",
    "version": 2
  }
}