Pith Number

pith:MDWKMRE5

pith:2019:MDWKMRE52DBAWDBXZ5BOW3GGN3

not attested not anchored not stored refs pending

Research Report: Exact biconvex reformulation of the $\ell_2-\ell_0$ minimization problem

Arne Bechensteen, Gilles Aubert, Laure Blanc-F\'eraud

arxiv:1903.01162 v2 · 2019-03-04 · 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{MDWKMRE52DBAWDBXZ5BOW3GGN3}

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	2026-05-17T23:51:56.967579Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

60eca6449dd0c20b0c37cf42eb6cc66ef5981abce3915c8f70fd0f766cfcaf76

Aliases

arxiv: 1903.01162 · arxiv_version: 1903.01162v2 · doi: 10.48550/arxiv.1903.01162 · pith_short_12: MDWKMRE52DBA · pith_short_16: MDWKMRE52DBAWDBX · pith_short_8: MDWKMRE5

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/MDWKMRE52DBAWDBXZ5BOW3GGN3 \
  | 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: 60eca6449dd0c20b0c37cf42eb6cc66ef5981abce3915c8f70fd0f766cfcaf76

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "153f89b034d740b194b8790964710632babdb4ecfcc61c0b09010aeffe4fad37",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-03-04T10:29:32Z",
    "title_canon_sha256": "a2ebd7415b478338c709a38efafad29803c75c3e5656e25b317acafa5fdc9d9f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.01162",
    "kind": "arxiv",
    "version": 2
  }
}