Pith Number

pith:WNA6Q7TQ

pith:2026:WNA6Q7TQ2HJPPAW74JDAHMM6TQ

not attested not anchored not stored refs pending

A Quadratic $G^1$ Spline Approximation of the Sphere over Uniform Polyhedra

Ale\v{s} Vavpeti\v{c}, Ema \v{C}e\v{s}ek

arxiv:2606.25697 v1 · 2026-06-24 · math.NA · cs.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{WNA6Q7TQ2HJPPAW74JDAHMM6TQ}

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	2026-06-25T01:18:13.042969Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b341e87e70d1d2f782dfe24603b19e9c1359202f6dda9130ac168de80009e1ac

Aliases

arxiv: 2606.25697 · arxiv_version: 2606.25697v1 · doi: 10.48550/arxiv.2606.25697 · pith_short_12: WNA6Q7TQ2HJP · pith_short_16: WNA6Q7TQ2HJPPAW7 · pith_short_8: WNA6Q7TQ

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/WNA6Q7TQ2HJPPAW74JDAHMM6TQ \
  | 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: b341e87e70d1d2f782dfe24603b19e9c1359202f6dda9130ac168de80009e1ac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b70725c1afc3642eda4c7d4c304306c5fd707e2df22e8475faffff2f47c28f9",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2026-06-24T11:11:08Z",
    "title_canon_sha256": "cef1153e7df133ff0476754b1148ef1279deaf98bb3ecb82de8b83562198e474"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.25697",
    "kind": "arxiv",
    "version": 1
  }
}