Pith Number

pith:V4PPCMNZ

pith:2012:V4PPCMNZVAH7HQLZP3TJUHL7WI

not attested not anchored not stored refs pending

The L1-Potts functional for robust jump-sparse reconstruction

Andreas Weinmann, Laurent Demaret, Martin Storath

arxiv:1207.4642 v3 · 2012-07-19 · math.OC · cs.NA · 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{V4PPCMNZVAH7HQLZP3TJUHL7WI}

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	2026-05-18T02:26:01.282088Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

af1ef131b9a80ff3c1797ee69a1d7fb2202d5c0627596e8b42913420b80a6dde

Aliases

arxiv: 1207.4642 · arxiv_version: 1207.4642v3 · doi: 10.48550/arxiv.1207.4642 · pith_short_12: V4PPCMNZVAH7 · pith_short_16: V4PPCMNZVAH7HQLZ · pith_short_8: V4PPCMNZ

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/V4PPCMNZVAH7HQLZP3TJUHL7WI \
  | 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: af1ef131b9a80ff3c1797ee69a1d7fb2202d5c0627596e8b42913420b80a6dde

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dfea6f363262351bb67dcf5a1e849a460483bfa50173cb730c7a7234b4a85d78",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2012-07-19T12:39:11Z",
    "title_canon_sha256": "ab3bbd5ec7f6e9b8f2dab2382e8e2b6ea3b2934773e5ebd1daa8a7b13ddb367e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.4642",
    "kind": "arxiv",
    "version": 3
  }
}