Pith Number

pith:SQ2VTZAW

pith:2013:SQ2VTZAWBLHTKVUIPW27HAOMKZ

not attested not anchored not stored refs pending

Weighted $\ell_1$-minimization for generalized non-uniform sparse model

Pablo A. Parrilo, Sidhant Misra

arxiv:1301.1327 v2 · 2013-01-07 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SQ2VTZAWBLHTKVUIPW27HAOMKZ}

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	2026-05-18T01:33:58.876721Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

943559e4160acf3556887db5f381cc5656d1d49a6dfa1cd0212eb974f2aae0ef

Aliases

arxiv: 1301.1327 · arxiv_version: 1301.1327v2 · doi: 10.48550/arxiv.1301.1327 · pith_short_12: SQ2VTZAWBLHT · pith_short_16: SQ2VTZAWBLHTKVUI · pith_short_8: SQ2VTZAW

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/SQ2VTZAWBLHTKVUIPW27HAOMKZ \
  | 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: 943559e4160acf3556887db5f381cc5656d1d49a6dfa1cd0212eb974f2aae0ef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ce2387180e3892c37114a78dc8fd72ca3687500a6c0a7419e29614998b5c1b05",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2013-01-07T20:24:50Z",
    "title_canon_sha256": "31549f2668ceb15d13a97e6d735132610ef5d6bc70d6a0768d7910ee1456cd17"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.1327",
    "kind": "arxiv",
    "version": 2
  }
}