Pith Number

pith:37WWO6UN

pith:2018:37WWO6UN4CG6WXBTHNHKJJMWDM

not attested not anchored not stored refs pending

Thinplate Splines on the Sphere

Rick K. Beatson, Wolfgang zu Castell

arxiv:1801.01313 v2 · 2018-01-04 · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{37WWO6UN4CG6WXBTHNHKJJMWDM}

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	2026-05-18T00:08:21.244346Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dfed677a8de08deb5c333b4ea4a5961b2900bb1b08807cc4fbf6296603175386

Aliases

arxiv: 1801.01313 · arxiv_version: 1801.01313v2 · doi: 10.48550/arxiv.1801.01313 · pith_short_12: 37WWO6UN4CG6 · pith_short_16: 37WWO6UN4CG6WXBT · pith_short_8: 37WWO6UN

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/37WWO6UN4CG6WXBTHNHKJJMWDM \
  | 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: dfed677a8de08deb5c333b4ea4a5961b2900bb1b08807cc4fbf6296603175386

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e411ed6a91964e5a6ffc56b51cb9e15dd1641244a00f77ca1aa5f2610fab4a36",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2018-01-04T11:43:18Z",
    "title_canon_sha256": "9750bc47523da6288a86475b3a26546ec856f419b582d7b90c4a74e1e0f7c1f4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.01313",
    "kind": "arxiv",
    "version": 2
  }
}