Pith Number

pith:ULSBTZJH

pith:2008:ULSBTZJHJ2KGGY2IOERYDSIDPB

not attested not anchored not stored refs pending

Exact Matrix Completion via Convex Optimization

Benjamin Recht, Emmanuel J. Candes

arxiv:0805.4471 v1 · 2008-05-29 · cs.IT · math.IT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ULSBTZJHJ2KGGY2IOERYDSIDPB}

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.

Cited by

1 paper in Pith

Query-efficient model evaluation using cached responses

Receipt and verification

First computed	2026-07-04T15:11:52.166680Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a2e419e5274e94636348712381c9037856acd5b1651a3025ff5c5917f19fbb26

Aliases

arxiv: 0805.4471 · arxiv_version: 0805.4471v1 · doi: 10.48550/arxiv.0805.4471 · pith_short_12: ULSBTZJHJ2KG · pith_short_16: ULSBTZJHJ2KGGY2I · pith_short_8: ULSBTZJH

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/ULSBTZJHJ2KGGY2IOERYDSIDPB \
  | 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: a2e419e5274e94636348712381c9037856acd5b1651a3025ff5c5917f19fbb26

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d92c4bf75ecd47fcb6a6741314db36a22a3c9fc90cdd01858bda7a163157b902",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2008-05-29T05:29:56Z",
    "title_canon_sha256": "a82750c6f51beadf51e331d8feb3d4d494c78389fc709b0894807330b965e608"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0805.4471",
    "kind": "arxiv",
    "version": 1
  }
}