Pith Number

pith:Q4E42MHI

pith:2019:Q4E42MHISZO6JGDY2WBRTQLMID

not attested not anchored not stored refs pending

SNAP: Finding Approximate Second-Order Stationary Solutions Efficiently for Non-convex Linearly Constrained Problems

Bo Yang, Kejun Huang, Meisam Razaviyayn, Mingyi Hong, Songtao Lu

arxiv:1907.04450 v1 · 2019-07-09 · math.OC · cs.CC · 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{Q4E42MHISZO6JGDY2WBRTQLMID}

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	2026-05-17T23:41:00.299091Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8709cd30e8965de49878d58319c16c40dd56d341cbc4523a736d0f81e14289cf

Aliases

arxiv: 1907.04450 · arxiv_version: 1907.04450v1 · doi: 10.48550/arxiv.1907.04450 · pith_short_12: Q4E42MHISZO6 · pith_short_16: Q4E42MHISZO6JGDY · pith_short_8: Q4E42MHI

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/Q4E42MHISZO6JGDY2WBRTQLMID \
  | 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: 8709cd30e8965de49878d58319c16c40dd56d341cbc4523a736d0f81e14289cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1eb44eb3d5f3aeb43391420c71cefd4623ab6cf7b055708e379a68b2daf9f8cd",
    "cross_cats_sorted": [
      "cs.CC",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-07-09T22:46:41Z",
    "title_canon_sha256": "873b238e2c2f783c2b1157279fd299aad4b60ac489bb7062db4304ed86cb22bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.04450",
    "kind": "arxiv",
    "version": 1
  }
}