Pith Number

pith:VXNLVBZO

pith:2020:VXNLVBZOFRWACOVRX5KQM3CZIV

not attested not anchored not stored refs pending

A First-Order Primal-Dual Method for Nonconvex Constrained Optimization Based On the Augmented Lagrangian

Daoli Zhu, Lei Zhao, Shuzhong Zhang

arxiv:2007.12219 v1 · 2020-07-23 · 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{VXNLVBZOFRWACOVRX5KQM3CZIV}

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	2026-07-05T01:21:50.343402Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

addaba872e2c6c013ab1bf55066c5945638173a45cd3bcc13597ae08d2921d2a

Aliases

arxiv: 2007.12219 · arxiv_version: 2007.12219v1 · doi: 10.48550/arxiv.2007.12219 · pith_short_12: VXNLVBZOFRWA · pith_short_16: VXNLVBZOFRWACOVR · pith_short_8: VXNLVBZO

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/VXNLVBZOFRWACOVRX5KQM3CZIV \
  | 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: addaba872e2c6c013ab1bf55066c5945638173a45cd3bcc13597ae08d2921d2a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d3c94b5c80027c3caec202b92a330a48bf00b845669da44b5c77419aec5c0dd5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2020-07-23T19:16:13Z",
    "title_canon_sha256": "6333c5f90465e5dc6b3ea64dcb6ea9655716f61755b4408d40b83fb61f90482f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2007.12219",
    "kind": "arxiv",
    "version": 1
  }
}