Pith Number

pith:5AQWRVCX

pith:2018:5AQWRVCXWQ7FT43THWMEU73HOL

not attested not anchored not stored refs pending

Orthogonal Basis Function Over the Unit Circle with the Minimax Property

Richard J. Mathar

arxiv:1802.09518 v1 · 2018-02-23 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5AQWRVCXWQ7FT43THWMEU73HOL}

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	2026-05-18T00:22:32.919686Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e82168d457b43e59f3733d984a7f6772caacd3e1112f6cf1451d31a79c8efb70

Aliases

arxiv: 1802.09518 · arxiv_version: 1802.09518v1 · doi: 10.48550/arxiv.1802.09518 · pith_short_12: 5AQWRVCXWQ7F · pith_short_16: 5AQWRVCXWQ7FT43T · pith_short_8: 5AQWRVCX

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/5AQWRVCXWQ7FT43THWMEU73HOL \
  | 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: e82168d457b43e59f3733d984a7f6772caacd3e1112f6cf1451d31a79c8efb70

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "70afad8062ef5490548988f99035dd71d94e22c0da98947a40fca5ee4c2310e9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-02-23T22:20:45Z",
    "title_canon_sha256": "c73a4cba853e032cc434308bbab26f47765d32680513ab94da35290aa36da4e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.09518",
    "kind": "arxiv",
    "version": 1
  }
}