Pith Number

pith:JIM5K2CJ

pith:2013:JIM5K2CJ46TSETYP2OJ2VPEPAU

not attested not anchored not stored refs pending

Quadratic Basis Pursuit

Allen Y. Yang, Henrik Ohlsson, Michel Verhaegen, Roy Dong, S. Shankar Sastry

arxiv:1301.7002 v2 · 2013-01-29 · cs.IT · math.IT · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JIM5K2CJ46TSETYP2OJ2VPEPAU}

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	2026-05-18T03:34:02.338585Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4a19d56849e7a7224f0fd393aabc8f053efe5f0af556056ef668a90c07f200b9

Aliases

arxiv: 1301.7002 · arxiv_version: 1301.7002v2 · doi: 10.48550/arxiv.1301.7002 · pith_short_12: JIM5K2CJ46TS · pith_short_16: JIM5K2CJ46TSETYP · pith_short_8: JIM5K2CJ

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/JIM5K2CJ46TSETYP2OJ2VPEPAU \
  | 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: 4a19d56849e7a7224f0fd393aabc8f053efe5f0af556056ef668a90c07f200b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f8ed409ac089fc9b072b52213de07d9b807b7ee4b2f42cf04e58b0ce2d509df4",
    "cross_cats_sorted": [
      "math.IT",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2013-01-29T17:54:29Z",
    "title_canon_sha256": "ca477ea74627a86f25e6daf1bcf5f0a457ae3c204f715f5f8316d974f811d85b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.7002",
    "kind": "arxiv",
    "version": 2
  }
}