Pith Number

pith:LHVAV2OR

pith:2019:LHVAV2ORPT3ZQFC3MUGOMQV7MI

not attested not anchored not stored refs pending

Efficient Algorithms for Approximate Smooth Selection

Bernat Guillen Pegueroles, Charles Fefferman

arxiv:1905.04156 v1 · 2019-05-08 · math.FA · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LHVAV2ORPT3ZQFC3MUGOMQV7MI}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-17T23:46:34.368681Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

59ea0ae9d17cf798145b650ce642bf623c7418b8db76b6c68ab34493cef79365

Aliases

arxiv: 1905.04156 · arxiv_version: 1905.04156v1 · doi: 10.48550/arxiv.1905.04156 · pith_short_12: LHVAV2ORPT3Z · pith_short_16: LHVAV2ORPT3ZQFC3 · pith_short_8: LHVAV2OR

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/LHVAV2ORPT3ZQFC3MUGOMQV7MI \
  | 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: 59ea0ae9d17cf798145b650ce642bf623c7418b8db76b6c68ab34493cef79365

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8d3b1c179020eedbf421874ac88ccd971663b3bd8f336d6c7c26e87e28e5feb0",
    "cross_cats_sorted": [
      "math.CA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2019-05-08T20:17:57Z",
    "title_canon_sha256": "3be67748b0f01fe1d5a4687ea190c416f108860e2ca1e729747b3a24b74849e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.04156",
    "kind": "arxiv",
    "version": 1
  }
}