Pith Number

pith:PGY2UO2Y

pith:2019:PGY2UO2YHSD7DYHYCR66RETG2U

not attested not anchored not stored refs pending

Spurious Vanishing Problem in Approximate Vanishing Ideal

Hiroshi Kera, Yoshihiko Hasegawa

arxiv:1901.08798 v3 · 2019-01-25 · stat.ML · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PGY2UO2YHSD7DYHYCR66RETG2U}

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	2026-07-05T00:17:49.427976Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

79b1aa3b583c87f1e0f8147de89266d5262dbaecf4b0446e9c3304f065ea9a57

Aliases

arxiv: 1901.08798 · arxiv_version: 1901.08798v3 · doi: 10.48550/arxiv.1901.08798 · pith_short_12: PGY2UO2YHSD7 · pith_short_16: PGY2UO2YHSD7DYHY · pith_short_8: PGY2UO2Y

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/PGY2UO2YHSD7DYHYCR66RETG2U \
  | 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: 79b1aa3b583c87f1e0f8147de89266d5262dbaecf4b0446e9c3304f065ea9a57

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "64098b0ef8cb21c8fa6652edae462494ac75a3bd0744614cb0291cb70aaf1818",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2019-01-25T09:41:26Z",
    "title_canon_sha256": "87a0e53fb7d4f235d8c1cd349ba2e3e7ac9bf62e6252ee3cedf298bf182c5196"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.08798",
    "kind": "arxiv",
    "version": 3
  }
}