Pith Number

pith:WNVY4P4A

pith:2008:WNVY4P4ASEF7H4TGE2W5WUIFTC

not attested not anchored not stored refs pending

A proximal method for composite minimization

A.S. Lewis, S.J. Wright

arxiv:0812.0423 v2 · 2008-12-02 · math.OC · math.NA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WNVY4P4ASEF7H4TGE2W5WUIFTC}

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	2026-05-18T02:18:04.615140Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b36b8e3f80910bf3f26626addb5105989d2aa8afef80ef07d8d77fbb826cd8e2

Aliases

arxiv: 0812.0423 · arxiv_version: 0812.0423v2 · doi: 10.48550/arxiv.0812.0423 · pith_short_12: WNVY4P4ASEF7 · pith_short_16: WNVY4P4ASEF7H4TG · pith_short_8: WNVY4P4A

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/WNVY4P4ASEF7H4TGE2W5WUIFTC \
  | 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: b36b8e3f80910bf3f26626addb5105989d2aa8afef80ef07d8d77fbb826cd8e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "21c06807b6ba436b3965eae1ef53fccfd1f223b3c13a09fa2795336972dd34f7",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2008-12-02T03:52:28Z",
    "title_canon_sha256": "57f979c25603bebee50801b55f0a0194a2b5cf227ee90ce20722aa03287a9ee3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.0423",
    "kind": "arxiv",
    "version": 2
  }
}