Pith Number

pith:FWDTLJMR

pith:2019:FWDTLJMRR4GT6Y7OPHKEWCAWDR

not attested not anchored not stored refs pending

Heavy-ball Algorithms Always Escape Saddle Points

Dongsheng Li, Hao Jiang, Shengguo Li, Tao Sun, Yong Dou, Zhe Quan

arxiv:1907.09697 v1 · 2019-07-23 · math.OC · 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{FWDTLJMRR4GT6Y7OPHKEWCAWDR}

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	2026-05-17T23:39:50.378493Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d8735a5918f0d3f63ee79d44b08161c4f3f43fa4fb3669d321a16ec8f6b08bb

Aliases

arxiv: 1907.09697 · arxiv_version: 1907.09697v1 · doi: 10.48550/arxiv.1907.09697 · pith_short_12: FWDTLJMRR4GT · pith_short_16: FWDTLJMRR4GT6Y7O · pith_short_8: FWDTLJMR

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/FWDTLJMRR4GT6Y7OPHKEWCAWDR \
  | 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: 2d8735a5918f0d3f63ee79d44b08161c4f3f43fa4fb3669d321a16ec8f6b08bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "508a9039aa8eff5a4026520334b215f9cbbafff9192fb24d9f5a6a0fb7be79b1",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-07-23T05:15:55Z",
    "title_canon_sha256": "910566c072b9d5429a2037989108dcb1f7886d1163f58e5e430e12762d3e1a7b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.09697",
    "kind": "arxiv",
    "version": 1
  }
}