Pith Number

pith:4JPJG6QT

pith:2013:4JPJG6QT345PSULC7IREMU6KA6

not attested not anchored not stored refs pending

Eventual linear convergence of the Douglas Rachford iteration for basis pursuit

Laurent Demanet, Xiangxiong Zhang

arxiv:1301.0542 v3 · 2013-01-03 · math.NA · cs.IT · math.IT · 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{4JPJG6QT345PSULC7IREMU6KA6}

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	2026-05-18T03:22:18.571951Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e25e937a13df3af95162fa224653ca07b29de4f02f2c5df5f8672b80120202e7

Aliases

arxiv: 1301.0542 · arxiv_version: 1301.0542v3 · doi: 10.48550/arxiv.1301.0542 · pith_short_12: 4JPJG6QT345P · pith_short_16: 4JPJG6QT345PSULC · pith_short_8: 4JPJG6QT

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/4JPJG6QT345PSULC7IREMU6KA6 \
  | 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: e25e937a13df3af95162fa224653ca07b29de4f02f2c5df5f8672b80120202e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff8b2bab6bba5e7eebc483450dc391e64ac3391a8afe54437959ed0ec7fb455f",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-01-03T20:28:20Z",
    "title_canon_sha256": "76eb0d98d1b44f611b83c96f4f98e93e837dec5cb0b79d2666bc95db80ef1f56"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.0542",
    "kind": "arxiv",
    "version": 3
  }
}