Pith Number

pith:74RNDUE6

pith:2015:74RNDUE6D26YOR4VWVXNA462AX

not attested not anchored not stored refs pending

Perfect Recovery Conditions For Non-Negative Sparse Modeling

Marco F. Duarte, Mario Parente, Yuki Itoh

arxiv:1512.02743 v3 · 2015-12-09 · cs.IT · cs.LG · 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{74RNDUE6D26YOR4VWVXNA462AX}

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	2026-05-18T01:03:32.735041Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff22d1d09e1ebd874795b56ed073da05e7bea5b10b280454bbf25528d8867378

Aliases

arxiv: 1512.02743 · arxiv_version: 1512.02743v3 · doi: 10.48550/arxiv.1512.02743 · pith_short_12: 74RNDUE6D26Y · pith_short_16: 74RNDUE6D26YOR4V · pith_short_8: 74RNDUE6

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/74RNDUE6D26YOR4VWVXNA462AX \
  | 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: ff22d1d09e1ebd874795b56ed073da05e7bea5b10b280454bbf25528d8867378

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e78c61e22d3461a0bf3d76cd9c29e70d519f9391424b61adb5723ac56c9eaceb",
    "cross_cats_sorted": [
      "cs.LG",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-12-09T03:51:19Z",
    "title_canon_sha256": "00ed9da3a9c927c9a2d6f73e8083ba2d8281d0b0dc6fed50e4d9f1e6da76353a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.02743",
    "kind": "arxiv",
    "version": 3
  }
}