Pith Number

pith:GLOJVOUB

pith:2019:GLOJVOUBQHZNMZTNA2V4WZBF2S

not attested not anchored not stored refs pending

A Gradient Sampling method based on Ideal direction for solving nonsmooth nonconvex optimization problems: convergence analysis and numerical experiments

M. Maleknia, M. Shamsi

arxiv:1907.01321 v1 · 2019-07-02 · 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{GLOJVOUBQHZNMZTNA2V4WZBF2S}

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	2026-05-17T23:41:40.661815Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

32dc9aba8181f2d6666d06abcb6425d4a727516dc453e0b119c24743d315b449

Aliases

arxiv: 1907.01321 · arxiv_version: 1907.01321v1 · doi: 10.48550/arxiv.1907.01321 · pith_short_12: GLOJVOUBQHZN · pith_short_16: GLOJVOUBQHZNMZTN · pith_short_8: GLOJVOUB

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/GLOJVOUBQHZNMZTNA2V4WZBF2S \
  | 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: 32dc9aba8181f2d6666d06abcb6425d4a727516dc453e0b119c24743d315b449

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "56c173a2857657b3d40c51e0c5c7db72bf284f3137425701497a6bc2a9fed98e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-07-02T12:31:55Z",
    "title_canon_sha256": "253fe1ad2777c85e14d918e01bd9c78b00e9f238cdbc5619ec1d343386ecc2f4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.01321",
    "kind": "arxiv",
    "version": 1
  }
}