Pith Number

pith:7QYWFL6W

pith:2013:7QYWFL6WZZAY5IU33ZH7ZCG4R2

not attested not anchored not stored refs pending

Douglas-Rachford Feasibility Methods for Matrix Completion Problems

Francisco J. Arag\'on Artacho, Jonathan M. Borwein, Matthew K. Tam

arxiv:1308.4243 v1 · 2013-08-20 · 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{7QYWFL6WZZAY5IU33ZH7ZCG4R2}

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	2026-05-18T02:46:21.834426Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc3162afd6ce418ea29bde4ffc88dc8e8e4b6deac262423852dfb69efa5d5a61

Aliases

arxiv: 1308.4243 · arxiv_version: 1308.4243v1 · doi: 10.48550/arxiv.1308.4243 · pith_short_12: 7QYWFL6WZZAY · pith_short_16: 7QYWFL6WZZAY5IU3 · pith_short_8: 7QYWFL6W

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/7QYWFL6WZZAY5IU33ZH7ZCG4R2 \
  | 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: fc3162afd6ce418ea29bde4ffc88dc8e8e4b6deac262423852dfb69efa5d5a61

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5dbf897c1fbdc716e7d50a2bc70bc3d1e1cbe0ca81635d94fb1ce0fa6dfd88fe",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2013-08-20T07:33:03Z",
    "title_canon_sha256": "0e0ff162e97040ea032c91a7b32a8ae69497de5ef8f99ea699f5f33c0d97b6c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.4243",
    "kind": "arxiv",
    "version": 1
  }
}