Pith Number

pith:VHK4VXYX

pith:2009:VHK4VXYX5WP57KYO6XUBOA32TJ

not attested not anchored not stored refs pending

NESTA: A Fast and Accurate First-order Method for Sparse Recovery

Emmanuel Candes, Jerome Bobin, Stephen Becker

arxiv:0904.3367 v1 · 2009-04-22 · 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{VHK4VXYX5WP57KYO6XUBOA32TJ}

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	2026-05-18T04:24:27.856684Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9d5cadf17ed9fdfab0ef5e817037a9a63218629d44f79be0e1bc6e2a607d61f

Aliases

arxiv: 0904.3367 · arxiv_version: 0904.3367v1 · doi: 10.48550/arxiv.0904.3367 · pith_short_12: VHK4VXYX5WP5 · pith_short_16: VHK4VXYX5WP57KYO · pith_short_8: VHK4VXYX

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/VHK4VXYX5WP57KYO6XUBOA32TJ \
  | 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: a9d5cadf17ed9fdfab0ef5e817037a9a63218629d44f79be0e1bc6e2a607d61f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0afdd381e015817d8da3ca6f66dd36160d0415c0f7f30303475c13de0dbc51bc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2009-04-22T01:05:20Z",
    "title_canon_sha256": "040b84b5fd2848842880829ce44399232bb30c87fbcc1e6c469200b0eb9e65a7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.3367",
    "kind": "arxiv",
    "version": 1
  }
}