Pith Number

pith:736ZS6W3

pith:2018:736ZS6W34KO6O2DRTACTR74VNK

not attested not anchored not stored refs pending

Structured Quasi-Newton Methods for Optimization with Orthogonality Constraints

Bo Jiang, Jiang Hu, Lin Lin, Yaxiang Yuan, Zaiwen Wen

arxiv:1809.00452 v1 · 2018-09-03 · 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{736ZS6W34KO6O2DRTACTR74VNK}

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	2026-05-18T00:06:35.196212Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fefd997adbe29de76871980538ff956aa93b4b65a29810f10497fa47f7d15211

Aliases

arxiv: 1809.00452 · arxiv_version: 1809.00452v1 · doi: 10.48550/arxiv.1809.00452 · pith_short_12: 736ZS6W34KO6 · pith_short_16: 736ZS6W34KO6O2DR · pith_short_8: 736ZS6W3

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/736ZS6W34KO6O2DRTACTR74VNK \
  | 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: fefd997adbe29de76871980538ff956aa93b4b65a29810f10497fa47f7d15211

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c50d7501125cf657de76ecd39fdc822a2ec20beca50619b1158f9816fc18db20",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-09-03T04:47:23Z",
    "title_canon_sha256": "55303289244b2b67ceb233bcdf299cea0602e1d949ac58dd6a00fa96600bee14"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.00452",
    "kind": "arxiv",
    "version": 1
  }
}