Pith Number

pith:FCKHZJLY

pith:2020:FCKHZJLYBOQWMVI4O5RE7WIFIV

not attested not anchored not stored refs pending

A Riemannian Primal-dual Algorithm Based on Proximal Operator and its Application in Metric Learning

Baocheng Zhu, Lintao Ma, Shijun Wang, Yuan Qi

arxiv:2005.09194 v1 · 2020-05-19 · cs.LG · 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{FCKHZJLYBOQWMVI4O5RE7WIFIV}

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	2026-07-05T01:03:47.814604Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28947ca5780ba166551c77624fd9054576faebde039a71d049aece69020d4e19

Aliases

arxiv: 2005.09194 · arxiv_version: 2005.09194v1 · doi: 10.48550/arxiv.2005.09194 · pith_short_12: FCKHZJLYBOQW · pith_short_16: FCKHZJLYBOQWMVI4 · pith_short_8: FCKHZJLY

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/FCKHZJLYBOQWMVI4O5RE7WIFIV \
  | 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: 28947ca5780ba166551c77624fd9054576faebde039a71d049aece69020d4e19

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b17521a6d521ed670eeb4d93d074b476a2e3d0109e5290c31dbe26d133a2384d",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2020-05-19T03:31:01Z",
    "title_canon_sha256": "2dbef840e07604b7f45109b4e93b0bfbe935c3291ede9682ec84645979888f38"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2005.09194",
    "kind": "arxiv",
    "version": 1
  }
}