Pith Number

pith:EU66ZI4E

pith:2011:EU66ZI4EKULSW5XVRRDFR6A6GG

not attested not anchored not stored refs pending

Recovery of Block-Sparse Representations from Noisy Observations via Orthogonal Matching Pursuit

Hongbin Li, Jun Fang

arxiv:1109.5430 v1 · 2011-09-26 · cs.IT · math.IT

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

Receipt and verification

First computed	2026-05-18T04:12:19.817193Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

253deca38455172b76f58c4658f81e3186d5a0a1397abcd92beafbc60fe2e8a6

Aliases

arxiv: 1109.5430 · arxiv_version: 1109.5430v1 · doi: 10.48550/arxiv.1109.5430 · pith_short_12: EU66ZI4EKULS · pith_short_16: EU66ZI4EKULSW5XV · pith_short_8: EU66ZI4E

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/EU66ZI4EKULSW5XVRRDFR6A6GG \
  | 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: 253deca38455172b76f58c4658f81e3186d5a0a1397abcd92beafbc60fe2e8a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "631fd27866c5efe406c4f09e090b48f035b7dc0c9f03dde25391f44865c39867",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2011-09-26T02:48:31Z",
    "title_canon_sha256": "f73edefc9beeb5af6132863d4836711bdf6aa08fe2478f35e81804d75d206e14"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.5430",
    "kind": "arxiv",
    "version": 1
  }
}