Pith Number

pith:UF6ZXLTH

pith:2009:UF6ZXLTHPMOBQVIAFR76ATUT7Z

not attested not anchored not stored refs pending

Approximate Sparse Recovery: Optimizing Time and Measurements

Anna C. Gilbert, Ely Porat, Martin J. Strauss, Yi Li

arxiv:0912.0229 v1 · 2009-12-01 · cs.DS · 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{UF6ZXLTHPMOBQVIAFR76ATUT7Z}

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	2026-05-18T02:59:48.843731Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a17d9bae677b1c1855002c7fe04e93fe71e4f901610af462dfa7bdb14af84437

Aliases

arxiv: 0912.0229 · arxiv_version: 0912.0229v1 · doi: 10.48550/arxiv.0912.0229 · pith_short_12: UF6ZXLTHPMOB · pith_short_16: UF6ZXLTHPMOBQVIA · pith_short_8: UF6ZXLTH

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/UF6ZXLTHPMOBQVIAFR76ATUT7Z \
  | 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: a17d9bae677b1c1855002c7fe04e93fe71e4f901610af462dfa7bdb14af84437

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5da56754b515760b95b7e6f18b6ee939c52e83dc3b47445f43284f654480e634",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2009-12-01T18:47:24Z",
    "title_canon_sha256": "12ac0b032b2ba94ea5e3b008f08f4cf7002b5a2ff73ef3ee7f43f57088889e99"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.0229",
    "kind": "arxiv",
    "version": 1
  }
}