Pith Number

pith:XE5ESTTS

pith:2016:XE5ESTTSYG6NKYJDLZPPYYD2AF

not attested not anchored not stored refs pending

A Fast Gradient Method for Nonnegative Sparse Regression with Self Dictionary

Nicolas Gillis, Robert Luce

arxiv:1610.01349 v3 · 2016-10-05 · math.OC · 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{XE5ESTTSYG6NKYJDLZPPYYD2AF}

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	2026-05-18T00:30:08.658941Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b93a494e72c1bcd561235e5efc607a017b15998e034cbe2a83b01822e3481c1b

Aliases

arxiv: 1610.01349 · arxiv_version: 1610.01349v3 · doi: 10.48550/arxiv.1610.01349 · pith_short_12: XE5ESTTSYG6N · pith_short_16: XE5ESTTSYG6NKYJD · pith_short_8: XE5ESTTS

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/XE5ESTTSYG6NKYJDLZPPYYD2AF \
  | 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: b93a494e72c1bcd561235e5efc607a017b15998e034cbe2a83b01822e3481c1b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "341219ce39114733e07c09e6fd5f0edf0ed2bcb1887025dc4d0181dfaa53fde9",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2016-10-05T10:29:10Z",
    "title_canon_sha256": "0f188fda40e953d1aabdee70bc93378fbc5bc570036712253ac90e400162ee92"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1610.01349",
    "kind": "arxiv",
    "version": 3
  }
}