Pith Number

pith:WFNCUVRT

pith:2009:WFNCUVRTJQNEOYRYFFFPYQ3M7W

not attested not anchored not stored refs pending

SpicyMKL

Ryota Tomioka, Taiji Suzuki

arxiv:0909.5026 v2 · 2009-09-28 · stat.ML · stat.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WFNCUVRTJQNEOYRYFFFPYQ3M7W}

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	2026-05-18T04:22:40.503751Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b15a2a56334c1a476238294afc436cfd82af5db02ef39d6b23680e688dfc7783

Aliases

arxiv: 0909.5026 · arxiv_version: 0909.5026v2 · doi: 10.48550/arxiv.0909.5026 · pith_short_12: WFNCUVRTJQNE · pith_short_16: WFNCUVRTJQNEOYRY · pith_short_8: WFNCUVRT

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/WFNCUVRTJQNEOYRYFFFPYQ3M7W \
  | 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: b15a2a56334c1a476238294afc436cfd82af5db02ef39d6b23680e688dfc7783

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "89aa97b70aa18ebf32b32e3d0176c9b96a5695cb5512e1c2778840becb681111",
    "cross_cats_sorted": [
      "stat.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2009-09-28T07:45:29Z",
    "title_canon_sha256": "d5847802847d853ff6da2a573305b78d897f3140d377d0a30647481d59953b76"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.5026",
    "kind": "arxiv",
    "version": 2
  }
}