Pith Number

pith:HSU4P62J

pith:2011:HSU4P62J2PQSF6SGSUC6TLJ3QW

not attested not anchored not stored refs pending

Sparse Signals Recovery from Noisy Measurements by Orthogonal Matching Pursuit

Song Li, Yi Shen

arxiv:1105.6177 v1 · 2011-05-31 · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HSU4P62J2PQSF6SGSUC6TLJ3QW}

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	2026-05-18T04:20:59.995980Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ca9c7fb49d3e122fa469505e9ad3b85a597bae86807fff082b683ce22665970

Aliases

arxiv: 1105.6177 · arxiv_version: 1105.6177v1 · doi: 10.48550/arxiv.1105.6177 · pith_short_12: HSU4P62J2PQS · pith_short_16: HSU4P62J2PQSF6SG · pith_short_8: HSU4P62J

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/HSU4P62J2PQSF6SGSUC6TLJ3QW \
  | 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: 3ca9c7fb49d3e122fa469505e9ad3b85a597bae86807fff082b683ce22665970

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c8a4d305c952058f867e35fcfe4b8eb8ff7d665aa29292550df2bb56a835fc3e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2011-05-31T07:03:07Z",
    "title_canon_sha256": "449f11e3fd9aa55e28d462aecde66f300c413c792dc7665a2f94f1e3e786826b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.6177",
    "kind": "arxiv",
    "version": 1
  }
}