Pith Number

pith:FTIFHVYD

pith:2018:FTIFHVYDZIXVXLNWKB3PW3GMIV

not attested not anchored not stored refs pending

sk-Spline interpolation on R^n

A. Kushpel, F. Jarad, J. Levesley, K. Tas

arxiv:1809.08618 v1 · 2018-09-23 · 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{FTIFHVYDZIXVXLNWKB3PW3GMIV}

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	2026-05-18T00:05:03.973606Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2cd053d703ca2f5badb65076fb6ccc455310ad5cb8b1ba0a1b2a7113856c8293

Aliases

arxiv: 1809.08618 · arxiv_version: 1809.08618v1 · doi: 10.48550/arxiv.1809.08618 · pith_short_12: FTIFHVYDZIXV · pith_short_16: FTIFHVYDZIXVXLNW · pith_short_8: FTIFHVYD

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/FTIFHVYDZIXVXLNWKB3PW3GMIV \
  | 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: 2cd053d703ca2f5badb65076fb6ccc455310ad5cb8b1ba0a1b2a7113856c8293

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "348c43a8c4ba9616b3c145dede842db6eed8b2d1415b1146608b9e435d65dfe3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-09-23T15:48:23Z",
    "title_canon_sha256": "f6d077c3faf3cb0bbfa29bf0cef8e169a2d6a76d605dfc9f086afa8dbab2e47d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.08618",
    "kind": "arxiv",
    "version": 1
  }
}