Pith Number

pith:BFU3JQJQ

pith:2013:BFU3JQJQ7MGBS2NEFCP6SORBBU

not attested not anchored not stored refs pending

Spatio-spectral Formulation and Design of Spatially-Varying Filters for Signal Estimation on the 2-Sphere

Parastoo Sadeghi, Rodney A. Kennedy, Salman Durrani, Zubair Khalid

arxiv:1308.6659 v1 · 2013-08-30 · astro-ph.IM · 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{BFU3JQJQ7MGBS2NEFCP6SORBBU}

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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

✓ 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	2026-05-18T01:47:56.583077Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0969b4c130fb0c1969a4289fe93a210d2acf53ce9895a041cc95397a581bd92e

Aliases

arxiv: 1308.6659 · arxiv_version: 1308.6659v1 · doi: 10.48550/arxiv.1308.6659 · pith_short_12: BFU3JQJQ7MGB · pith_short_16: BFU3JQJQ7MGBS2NE · pith_short_8: BFU3JQJQ

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/BFU3JQJQ7MGBS2NEFCP6SORBBU \
  | 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: 0969b4c130fb0c1969a4289fe93a210d2acf53ce9895a041cc95397a581bd92e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff1a9253f84ceef407710fa6225436b16691bf1e6fca7e6e47e91eaf6ca698f5",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2013-08-30T06:20:47Z",
    "title_canon_sha256": "e784b6f8f2f7a2c13faea91dc83f50fc8d3f33566a20792889cda2236054a668"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.6659",
    "kind": "arxiv",
    "version": 1
  }
}