Pith Number

pith:YY6474UH

pith:2007:YY6474UHDQOPQPVLU65J5QE7I3

not attested not anchored not stored refs pending

Uniform Uncertainty Principle and signal recovery via Regularized Orthogonal Matching Pursuit

Deanna Needell, Roman Vershynin

arxiv:0707.4203 v4 · 2007-07-28 · math.NA · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YY6474UHDQOPQPVLU65J5QE7I3}

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	2026-06-03T22:06:01.629074Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c63dcff2871c1cf83eaba7ba9ec09f46f402828d9132f410961baa2fbd494d1b

Aliases

arxiv: 0707.4203 · arxiv_version: 0707.4203v4 · doi: 10.48550/arxiv.0707.4203 · pith_short_12: YY6474UHDQOP · pith_short_16: YY6474UHDQOPQPVL · pith_short_8: YY6474UH

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/YY6474UHDQOPQPVLU65J5QE7I3 \
  | 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: c63dcff2871c1cf83eaba7ba9ec09f46f402828d9132f410961baa2fbd494d1b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "55624f166c58b3cbdbdd776061ff8a852eefba2f1f37040e7ab2065bbf350e8a",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "",
    "primary_cat": "math.NA",
    "submitted_at": "2007-07-28T02:38:43Z",
    "title_canon_sha256": "e6d8f423af7f533b04206e242cd0d2fb21a93fd65d286eee44810ee402f61c03"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0707.4203",
    "kind": "arxiv",
    "version": 4
  }
}