Pith Number

pith:P5P7YAFR

pith:2006:P5P7YAFRQS4C7ALAIQV7UZ7NRB

not attested not anchored not stored refs pending

Random Sampling of Sparse Trigonometric Polynomials II - Orthogonal Matching Pursuit versus Basis Pursuit

Holger Rauhut, Stefan Kunis

arxiv:math/0604429 v2 · 2006-04-19 · math.CA · cs.NA · math.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{P5P7YAFRQS4C7ALAIQV7UZ7NRB}

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	2026-06-03T22:06:19.504766Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f5ffc00b184b82f8160442bfa67ed8848451512c60fd996bc3c8bb66d584f5a

Aliases

arxiv: math/0604429 · arxiv_version: math/0604429v2 · doi: 10.48550/arxiv.math/0604429 · pith_short_12: P5P7YAFRQS4C · pith_short_16: P5P7YAFRQS4C7ALA · pith_short_8: P5P7YAFR

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/P5P7YAFRQS4C7ALAIQV7UZ7NRB \
  | 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: 7f5ffc00b184b82f8160442bfa67ed8848451512c60fd996bc3c8bb66d584f5a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fd18232f94a2ce719506bf2898bcd41a86cb13fcab5b373e4d2cf6fc5c1f50ad",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "",
    "primary_cat": "math.CA",
    "submitted_at": "2006-04-19T19:56:09Z",
    "title_canon_sha256": "1fea327508dcd47f9306825189768a9e9d7ae5a08a175d7a799f945a5edbfb69"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0604429",
    "kind": "arxiv",
    "version": 2
  }
}