Pith Number

pith:OBWHJLME

pith:2011:OBWHJLMENDXYJP75ZFUQQMBRKR

not attested not anchored not stored refs pending

Sparse Group Selection Through Co-Adaptive Penalties

Zhou Fang

arxiv:1111.4416 v1 · 2011-11-18 · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OBWHJLMENDXYJP75ZFUQQMBRKR}

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	2026-05-18T04:08:04.446721Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

706c74ad8468ef84bffdc9690830315467dc9cf3a169b3185dc976571b5bbe44

Aliases

arxiv: 1111.4416 · arxiv_version: 1111.4416v1 · doi: 10.48550/arxiv.1111.4416 · pith_short_12: OBWHJLMENDXY · pith_short_16: OBWHJLMENDXYJP75 · pith_short_8: OBWHJLME

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/OBWHJLMENDXYJP75ZFUQQMBRKR \
  | 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: 706c74ad8468ef84bffdc9690830315467dc9cf3a169b3185dc976571b5bbe44

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "962b371853ea795cf3b308ccbbdb0061450e05c34033d2d86c97fbcde244e49a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2011-11-18T16:38:18Z",
    "title_canon_sha256": "b395657e4795ba6e58ef605bd8c9ff60d992f4922368519b5f5842a8bb830c4e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.4416",
    "kind": "arxiv",
    "version": 1
  }
}