Pith Number

pith:YVA2WODN

pith:2009:YVA2WODNPKLQ5YGONBJEJX7JTB

not attested not anchored not stored refs pending

An Augmented Lagrangian Approach to the Constrained Optimization Formulation of Imaging Inverse Problems

Jos\'e M. Bioucas-Dias, Manya V. Afonso, M\'ario A. T. Figueiredo

arxiv:0912.3481 v1 · 2009-12-17 · math.OC · 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{YVA2WODNPKLQ5YGONBJEJX7JTB}

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	2026-05-18T03:43:42.798595Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c541ab386d7a970ee0ce685244dfe998550e2f579ca21a88f40c34e0c1ba5be3

Aliases

arxiv: 0912.3481 · arxiv_version: 0912.3481v1 · doi: 10.48550/arxiv.0912.3481 · pith_short_12: YVA2WODNPKLQ · pith_short_16: YVA2WODNPKLQ5YGO · pith_short_8: YVA2WODN

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/YVA2WODNPKLQ5YGONBJEJX7JTB \
  | 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: c541ab386d7a970ee0ce685244dfe998550e2f579ca21a88f40c34e0c1ba5be3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b12402e2dc86ee9b4c1a534e35a983687dffe2d32dfb1aa1a3fac673f01728c0",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2009-12-17T18:32:10Z",
    "title_canon_sha256": "cb7940a6e1a433fc5fab92161cf901826d488e6deb231ff2d738acf878eb09d8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.3481",
    "kind": "arxiv",
    "version": 1
  }
}