Pith Number

pith:4LUZDHLF

pith:2014:4LUZDHLF4BCPXTCGW4N5VMS2TA

not attested not anchored not stored refs pending

Douglas-Rachford splitting for nonconvex optimization with application to nonconvex feasibility problems

Guoyin Li, Ting Kei Pong

arxiv:1409.8444 v5 · 2014-09-30 · math.OC · 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{4LUZDHLF4BCPXTCGW4N5VMS2TA}

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	2026-05-18T01:26:58.269887Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e2e9919d65e044fbcc46b71bdab25a980c6999835e7a1dfb52dfad198c7ac189

Aliases

arxiv: 1409.8444 · arxiv_version: 1409.8444v5 · doi: 10.48550/arxiv.1409.8444 · pith_short_12: 4LUZDHLF4BCP · pith_short_16: 4LUZDHLF4BCPXTCG · pith_short_8: 4LUZDHLF

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/4LUZDHLF4BCPXTCGW4N5VMS2TA \
  | 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: e2e9919d65e044fbcc46b71bdab25a980c6999835e7a1dfb52dfad198c7ac189

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a13727676a050520d0f1a157b8d2cae006ac9b4c4894b6d35083944931f0b1b",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2014-09-30T09:12:29Z",
    "title_canon_sha256": "ade4a70dd20b77fc33613cd0464063c93ba0ff3e2d44f1699f7faa00c32ad218"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.8444",
    "kind": "arxiv",
    "version": 5
  }
}