Pith Number

pith:57K2UXGF

pith:2014:57K2UXGFHLYIB5I67U2Y4KZAB4

not attested not anchored not stored refs pending

A forward-backward view of some primal-dual optimization methods in image recovery

Bang Cong Vu, Jean-Christophe Pesquet, Laurent Condat, Patrick L. Combettes

arxiv:1406.5439 v1 · 2014-06-20 · 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{57K2UXGFHLYIB5I67U2Y4KZAB4}

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	2026-05-18T02:49:19.106509Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

efd5aa5cc53af080f51efd358e2b200f0ff809f38ae9ed4f1f93ce517f856013

Aliases

arxiv: 1406.5439 · arxiv_version: 1406.5439v1 · doi: 10.48550/arxiv.1406.5439 · pith_short_12: 57K2UXGFHLYI · pith_short_16: 57K2UXGFHLYIB5I6 · pith_short_8: 57K2UXGF

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/57K2UXGFHLYIB5I67U2Y4KZAB4 \
  | 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: efd5aa5cc53af080f51efd358e2b200f0ff809f38ae9ed4f1f93ce517f856013

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c8a0fefce1ecd477b92a30302130dcc494b598190630e81e732644b1ea165e8c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2014-06-20T15:58:27Z",
    "title_canon_sha256": "f5fd2c532714562e0293a1bc7c1e9d689d2f8115814a0ffc886516c566499750"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.5439",
    "kind": "arxiv",
    "version": 1
  }
}