Pith Number

pith:X3QUSLKS

pith:2015:X3QUSLKS7CZDB7HA2K66MPW3IN

not attested not anchored not stored refs pending

Learning the Structure for Structured Sparsity

Francis Bach (SIERRA, LIENS), Nino Shervashidze (SIERRA

arxiv:1503.03082 v2 · 2015-03-10 · 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{X3QUSLKS7CZDB7HA2K66MPW3IN}

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	2026-05-18T01:33:06.131449Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bee1492d52f8b230fce0d2bde63edb434529a59553a6e96a8f5a96c4fc19aece

Aliases

arxiv: 1503.03082 · arxiv_version: 1503.03082v2 · doi: 10.48550/arxiv.1503.03082 · pith_short_12: X3QUSLKS7CZD · pith_short_16: X3QUSLKS7CZDB7HA · pith_short_8: X3QUSLKS

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/X3QUSLKS7CZDB7HA2K66MPW3IN \
  | 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: bee1492d52f8b230fce0d2bde63edb434529a59553a6e96a8f5a96c4fc19aece

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b3608f2028992d27112e6610d4ad4089337dede62899ae2b7e4d215ec1b3183f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2015-03-10T20:09:13Z",
    "title_canon_sha256": "aee3e9c8f79622125afa3f579a027c675bdf15cd62e4888a68f07d47faa11c91"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.03082",
    "kind": "arxiv",
    "version": 2
  }
}