Pith Number

pith:FLBOIXN3

pith:2013:FLBOIXN34UEAWTPAOLIALMGRHO

not attested not anchored not stored refs pending

A Method for Finding Structured Sparse Solutions to Non-negative Least Squares Problems with Applications

Ernie Esser, Jack Xin, Yifei Lou

arxiv:1301.0413 v1 · 2013-01-03 · stat.ML · stat.AP · stat.CO · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FLBOIXN34UEAWTPAOLIALMGRHO}

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	2026-05-18T03:37:19.693799Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ac2e45dbbe5080b4de072d005b0d13b860e391a97c6343a9ac940f27d8626a2

Aliases

arxiv: 1301.0413 · arxiv_version: 1301.0413v1 · doi: 10.48550/arxiv.1301.0413 · pith_short_12: FLBOIXN34UEA · pith_short_16: FLBOIXN34UEAWTPA · pith_short_8: FLBOIXN3

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/FLBOIXN34UEAWTPAOLIALMGRHO \
  | 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: 2ac2e45dbbe5080b4de072d005b0d13b860e391a97c6343a9ac940f27d8626a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3f2867cb7d239fd816579a918d29c636c65d01f09c209107c62b98499fe3e94a",
    "cross_cats_sorted": [
      "stat.AP",
      "stat.CO",
      "stat.ME"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2013-01-03T10:09:41Z",
    "title_canon_sha256": "c0597266bc261cf83581bd8e9032fa05ee2694fcc52e60f864d04d4fb1b87b5a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.0413",
    "kind": "arxiv",
    "version": 1
  }
}