Pith Number

pith:AB3CATX5

pith:2010:AB3CATX52JU4ZYBD4P3ZFOR54E

not attested not anchored not stored refs pending

Beyond convergence rates: Exact recovery with Tikhonov regularization with sparsity constraints

Dennis Trede, Dirk A. Lorenz, Stefan Schiffler

arxiv:1001.3276 v4 · 2010-01-19 · math.FA · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AB3CATX52JU4ZYBD4P3ZFOR54E}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:09:42.453576Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0076204efdd269cce023e3f792ba3de10c01f4c538c4963187bf19783eea1473

Aliases

arxiv: 1001.3276 · arxiv_version: 1001.3276v4 · doi: 10.48550/arxiv.1001.3276 · pith_short_12: AB3CATX52JU4 · pith_short_16: AB3CATX52JU4ZYBD · pith_short_8: AB3CATX5

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/AB3CATX52JU4ZYBD4P3ZFOR54E \
  | 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: 0076204efdd269cce023e3f792ba3de10c01f4c538c4963187bf19783eea1473

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "07de3344d11428222b3a81460bdedf1cab6bcec69b5e4ab66158157b6d82d527",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2010-01-19T12:16:17Z",
    "title_canon_sha256": "3948d724871d314093b67996798b22b64f27e536caa097f352dcd9599469aa3f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.3276",
    "kind": "arxiv",
    "version": 4
  }
}