Pith Number

pith:Y6KK3ZPR

pith:2017:Y6KK3ZPR2MBRFTTVFOKMVGBQDE

not attested not anchored not stored refs pending

Passive approximation and optimization using B-splines

Annemarie Luger, B. L. G. Jonsson, B\"orje Nilsson, Joachim Toft, Mats Gustafsson, Sven Nordebo, Yevhen Ivanenko

arxiv:1711.07937 v1 · 2017-11-20 · 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{Y6KK3ZPR2MBRFTTVFOKMVGBQDE}

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	2026-05-18T00:29:56.120949Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c794ade5f1d30312ce752b94ca9830192924a756da80f556125ee7a1118895b8

Aliases

arxiv: 1711.07937 · arxiv_version: 1711.07937v1 · doi: 10.48550/arxiv.1711.07937 · pith_short_12: Y6KK3ZPR2MBR · pith_short_16: Y6KK3ZPR2MBRFTTV · pith_short_8: Y6KK3ZPR

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/Y6KK3ZPR2MBRFTTVFOKMVGBQDE \
  | 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: c794ade5f1d30312ce752b94ca9830192924a756da80f556125ee7a1118895b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf5848d2a416a5d9e0c2ab57459fc7912dd3cc78a703be47c6b78a6291b841b9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-11-20T11:09:34Z",
    "title_canon_sha256": "230042fc1dd53c27e0981a313177c4e3ee08c6259a075fc8496eb6871b49e7db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.07937",
    "kind": "arxiv",
    "version": 1
  }
}