Pith Number

pith:WYXULZXK

pith:2009:WYXULZXKRKQGEPAEFPI3W7F65O

not attested not anchored not stored refs pending

Fast Image Recovery Using Variable Splitting and Constrained Optimization

Jos\'e M. Bioucas-Dias, Manya V. Afonso, M\'ario A. T. Figueiredo

arxiv:0910.4887 v1 · 2009-10-26 · 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{WYXULZXKRKQGEPAEFPI3W7F65O}

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	2026-05-18T02:11:11.408569Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b62f45e6ea8aa0623c042bd1bb7cbeeb929dc16fcb47ce0047f48574a91a1c00

Aliases

arxiv: 0910.4887 · arxiv_version: 0910.4887v1 · doi: 10.48550/arxiv.0910.4887 · pith_short_12: WYXULZXKRKQG · pith_short_16: WYXULZXKRKQGEPAE · pith_short_8: WYXULZXK

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/WYXULZXKRKQGEPAEFPI3W7F65O \
  | 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: b62f45e6ea8aa0623c042bd1bb7cbeeb929dc16fcb47ce0047f48574a91a1c00

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ccc37f54f1b412b480e611152583c5cbae82cd1002f07d15a3e1836bedd1402a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2009-10-26T14:14:59Z",
    "title_canon_sha256": "d7e8a3a8668fd38ef9905dab66275f7877ae53a3ffe72564546cf17e371e839e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.4887",
    "kind": "arxiv",
    "version": 1
  }
}