Pith Number

pith:6Z3E6XZM

pith:2016:6Z3E6XZM36DKBKAW3ETQ6SIHUW

not attested not anchored not stored refs pending

On the Douglas-Rachford algorithm

Heinz H. Bauschke, Walaa M. Moursi

arxiv:1604.04603 v1 · 2016-04-15 · math.OC · math.FA · 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{6Z3E6XZM36DKBKAW3ETQ6SIHUW}

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	2026-05-18T01:16:34.525510Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6764f5f2cdf86a0a816d9270f4907a5b6c22b1b1c324cb8a5cd709b72238123

Aliases

arxiv: 1604.04603 · arxiv_version: 1604.04603v1 · doi: 10.48550/arxiv.1604.04603 · pith_short_12: 6Z3E6XZM36DK · pith_short_16: 6Z3E6XZM36DKBKAW · pith_short_8: 6Z3E6XZM

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/6Z3E6XZM36DKBKAW3ETQ6SIHUW \
  | 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: f6764f5f2cdf86a0a816d9270f4907a5b6c22b1b1c324cb8a5cd709b72238123

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b8433110768e462e9d8aa3ba2bb4aa437033b5e40e2078b33fef91614c8baee7",
    "cross_cats_sorted": [
      "math.FA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2016-04-15T19:02:07Z",
    "title_canon_sha256": "75680bff728d88f96640c88bc95f823e977ed5633c6b7b9a6218767ad0944c21"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.04603",
    "kind": "arxiv",
    "version": 1
  }
}