Pith Number

pith:VFSRZRZJ

pith:2014:VFSRZRZJAUZE2DWCPFRSGRIZ4J

not attested not anchored not stored refs pending

Scalable sparse covariance estimation via self-concordance

Anastasios Kyrillidis, Quoc Tran-Dinh, Rabeeh Karimi Mahabadi, Volkan Cevher

arxiv:1405.3263 v1 · 2014-05-13 · stat.ML · cs.IT · math.IT · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VFSRZRZJAUZE2DWCPFRSGRIZ4J}

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	2026-05-18T02:51:57.434850Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9651cc72905324d0ec27963234519e26fd8265e9eee96eb6ab63e8041205d17

Aliases

arxiv: 1405.3263 · arxiv_version: 1405.3263v1 · doi: 10.48550/arxiv.1405.3263 · pith_short_12: VFSRZRZJAUZE · pith_short_16: VFSRZRZJAUZE2DWC · pith_short_8: VFSRZRZJ

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/VFSRZRZJAUZE2DWCPFRSGRIZ4J \
  | 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: a9651cc72905324d0ec27963234519e26fd8265e9eee96eb6ab63e8041205d17

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "acac8e1ccd7cbccfb753d534a6e17e0815e78e791cda74708cf3c7bb3a270295",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2014-05-13T19:21:09Z",
    "title_canon_sha256": "b516a47000c7b4402f7e4cfb2601d2a19171f1ff1bec88e815796f331dd4532a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.3263",
    "kind": "arxiv",
    "version": 1
  }
}