Pith Number

pith:GTERYJGR

pith:2014:GTERYJGR6YZ4VIBOG22UUUFNDX

not attested not anchored not stored refs pending

Finding a sparse vector in a subspace: Linear sparsity using alternating directions

John Wright, Ju Sun, Qing Qu

arxiv:1412.4659 v3 · 2014-12-15 · cs.IT · cs.CV · cs.LG · math.IT · math.OC · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GTERYJGR6YZ4VIBOG22UUUFNDX}

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	2026-05-18T01:04:23.063585Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

34c91c24d1f633caa02e36b54a50ad1dd0b1cff8b5bbd6c53f88516c785ec265

Aliases

arxiv: 1412.4659 · arxiv_version: 1412.4659v3 · doi: 10.48550/arxiv.1412.4659 · pith_short_12: GTERYJGR6YZ4 · pith_short_16: GTERYJGR6YZ4VIBO · pith_short_8: GTERYJGR

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/GTERYJGR6YZ4VIBOG22UUUFNDX \
  | 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: 34c91c24d1f633caa02e36b54a50ad1dd0b1cff8b5bbd6c53f88516c785ec265

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bbfe344855d1a0e970c9920e75a8278f0e347044ccc41dd3c7159fde3bf7b3fd",
    "cross_cats_sorted": [
      "cs.CV",
      "cs.LG",
      "math.IT",
      "math.OC",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2014-12-15T16:27:29Z",
    "title_canon_sha256": "893bb6d9f6561b798c8480483b0a31e237ce8f7da2b05b985ce0313532ecf137"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.4659",
    "kind": "arxiv",
    "version": 3
  }
}