Pith Number

pith:VEBTVD7D

pith:2018:VEBTVD7DIJISITU2UUK7OFK46J

not attested not anchored not stored refs pending

Trivariate Spline Representations for Computer Aided Design and Additive Manufacturing

Oliver Barrowclough, Tor Dokken, Vibeke Skytt

arxiv:1803.05756 v3 · 2018-03-15 · 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{VEBTVD7DIJISITU2UUK7OFK46J}

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	2026-05-18T00:06:50.807147Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9033a8fe34251244e9aa515f7155cf2595198676f3ad6e84364853b252807d6

Aliases

arxiv: 1803.05756 · arxiv_version: 1803.05756v3 · doi: 10.48550/arxiv.1803.05756 · pith_short_12: VEBTVD7DIJIS · pith_short_16: VEBTVD7DIJISITU2 · pith_short_8: VEBTVD7D

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/VEBTVD7DIJISITU2UUK7OFK46J \
  | 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: a9033a8fe34251244e9aa515f7155cf2595198676f3ad6e84364853b252807d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c62e8da34b7c3944266b388f39d1c2cff0e59883dde75aae0c6245d922d6318d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-03-15T14:08:58Z",
    "title_canon_sha256": "1a1d96f92cdf8d78590acdb9e4e7e108bc08e3c7f2ce6a6d284dd9f1de5ff71e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.05756",
    "kind": "arxiv",
    "version": 3
  }
}