Pith Number

pith:TFQENUDV

pith:2015:TFQENUDV7OXPCR3L3H5XGZUPQO

not attested not anchored not stored refs pending

Convergence of Tikhonov regularization for solving ill-posed operator equations with solutions defined on surfaces

Bert Juettler, Guozhi Dong, Otmar Scherzer, Thomas Takacs

arxiv:1510.07028 v2 · 2015-10-22 · math.NA · math.DG · math.FA · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TFQENUDV7OXPCR3L3H5XGZUPQO}

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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	2026-05-18T00:55:04.286362Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

996046d075fbaef1476bd9fb73668f83af6585901c487909d5ffbabc65cbae82

Aliases

arxiv: 1510.07028 · arxiv_version: 1510.07028v2 · doi: 10.48550/arxiv.1510.07028 · pith_short_12: TFQENUDV7OXP · pith_short_16: TFQENUDV7OXPCR3L · pith_short_8: TFQENUDV

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/TFQENUDV7OXPCR3L3H5XGZUPQO \
  | 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: 996046d075fbaef1476bd9fb73668f83af6585901c487909d5ffbabc65cbae82

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4bb2fd1aa79675876f62118a63ef11da463abcbdac607831c4de79a1797fe67b",
    "cross_cats_sorted": [
      "math.DG",
      "math.FA",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-10-22T07:53:19Z",
    "title_canon_sha256": "d87f2aeebe47f247ec7d69e1c03e0f1466aee9e236397ed52963eb70c478d9c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.07028",
    "kind": "arxiv",
    "version": 2
  }
}