Pith Number

pith:CLGWPC6L

pith:2026:CLGWPC6LZB3SBGAGAWX6EIBISQ

not attested not anchored not stored refs pending

Fast algorithms for interpolation with clamped $L$-splines of order four

G. Simeonov, H. Render, O. Kounchev, Ts. Tsachev

arxiv:2605.20283 v1 · 2026-05-19 · 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{CLGWPC6LZB3SBGAGAWX6EIBISQ}

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	2026-05-21T00:04:23.908255Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

12cd678bcbc87720980605afe22028942d4bbffede689e38a02b5227aec56617

Aliases

arxiv: 2605.20283 · arxiv_version: 2605.20283v1 · doi: 10.48550/arxiv.2605.20283 · pith_short_12: CLGWPC6LZB3S · pith_short_16: CLGWPC6LZB3SBGAG · pith_short_8: CLGWPC6L

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/CLGWPC6LZB3SBGAGAWX6EIBISQ \
  | 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: 12cd678bcbc87720980605afe22028942d4bbffede689e38a02b5227aec56617

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da06f231d5d527468cca6adb0d2547717821324153faf2d13cc4c4c4e374988e",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2026-05-19T05:52:42Z",
    "title_canon_sha256": "2455f58f031b903a639afda5627888f5f4388175f2b145cedd3c75dee623c16c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.20283",
    "kind": "arxiv",
    "version": 1
  }
}