Pith Number

pith:UMCPAIOX

pith:2009:UMCPAIOXXQZVK6IFRB2KEKVQZE

not attested not anchored not stored refs pending

From Theory to Practice: Sub-Nyquist Sampling of Sparse Wideband Analog Signals

Moshe Mishali, Yonina C. Eldar

arxiv:0902.4291 v3 · 2009-02-25 · 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{UMCPAIOXXQZVK6IFRB2KEKVQZE}

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	2026-05-18T02:14:39.195135Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a304f021d7bc335579058874a22ab0c9059a5389cbbb2ef44c49156a098789aa

Aliases

arxiv: 0902.4291 · arxiv_version: 0902.4291v3 · doi: 10.48550/arxiv.0902.4291 · pith_short_12: UMCPAIOXXQZV · pith_short_16: UMCPAIOXXQZVK6IF · pith_short_8: UMCPAIOX

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/UMCPAIOXXQZVK6IFRB2KEKVQZE \
  | 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: a304f021d7bc335579058874a22ab0c9059a5389cbbb2ef44c49156a098789aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "84875909b6223bef2151c3d8133acafb4c284de7c1f5a6efef888313a58c258e",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2009-02-25T06:33:41Z",
    "title_canon_sha256": "0073bf3f5ef2f97c04a61607b76c9bfe8b284d09c8666252df77d0b5b9df0298"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.4291",
    "kind": "arxiv",
    "version": 3
  }
}