Pith Number

pith:7EBGVBV4

pith:2012:7EBGVBV47OT5U3SH3LFPFKAOQ3

not attested not anchored not stored refs pending

Canonical Primal-Dual Method for Solving Non-convex Minimization Problems

Changzhi Wu, Chaojie Li, David Yang Gao

arxiv:1212.6492 v1 · 2012-12-28 · cs.NA · cs.DS · 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{7EBGVBV47OT5U3SH3LFPFKAOQ3}

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	2026-05-18T03:37:31.798524Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9026a86bcfba7da6e47dacaf2a80e86f5d9964427201ae96d198f34e32f030f

Aliases

arxiv: 1212.6492 · arxiv_version: 1212.6492v1 · doi: 10.48550/arxiv.1212.6492 · pith_short_12: 7EBGVBV47OT5 · pith_short_16: 7EBGVBV47OT5U3SH · pith_short_8: 7EBGVBV4

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/7EBGVBV47OT5U3SH3LFPFKAOQ3 \
  | 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: f9026a86bcfba7da6e47dacaf2a80e86f5d9964427201ae96d198f34e32f030f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bece11814cce09dd24bd5e5c8594223c81dca57f0480b1692702725528f3bc13",
    "cross_cats_sorted": [
      "cs.DS",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2012-12-28T09:30:57Z",
    "title_canon_sha256": "0ca530c302d6c1b1d1abee4391f1111ddf0dfc3de516edcfcd4154a028d660ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.6492",
    "kind": "arxiv",
    "version": 1
  }
}