Pith Number

pith:BUF2F4UB

pith:2009:BUF2F4UBC2A46FLNVRFAOQJUIL

not attested not anchored not stored refs pending

Slepian functions and their use in signal estimation and spectral analysis

Frederik J. Simons

arxiv:0909.5368 v1 · 2009-09-29 · physics.data-an · physics.geo-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BUF2F4UBC2A46FLNVRFAOQJUIL}

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	2026-05-18T03:21:08.863917Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d0ba2f2811681cf156dac4a07413442cc36c15c7e90d41f3ee46fcc1d6805a8

Aliases

arxiv: 0909.5368 · arxiv_version: 0909.5368v1 · doi: 10.48550/arxiv.0909.5368 · pith_short_12: BUF2F4UBC2A4 · pith_short_16: BUF2F4UBC2A46FLN · pith_short_8: BUF2F4UB

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/BUF2F4UBC2A46FLNVRFAOQJUIL \
  | 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: 0d0ba2f2811681cf156dac4a07413442cc36c15c7e90d41f3ee46fcc1d6805a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c4c93c4fbe3d07088df90b24f838230d893b4afa7955608dd74c56dca1deb8b7",
    "cross_cats_sorted": [
      "physics.geo-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.data-an",
    "submitted_at": "2009-09-29T18:01:43Z",
    "title_canon_sha256": "21bae7dcc0453fa4733698e9035cac96fff90599b1c4b7f9b2ef9ee57dd59ade"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.5368",
    "kind": "arxiv",
    "version": 1
  }
}