Pith Number

pith:AMPKEBKE

pith:2019:AMPKEBKE3OTF43DPJN5R3LZHRY

not attested not anchored not stored refs pending

Convergence analysis and parity conservation of a new form of a quadratic explicit spline

A. J. Ferrari, E. A. Santillan Marcus, L. P. Lara

arxiv:1906.10559 v1 · 2019-06-25 · 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{AMPKEBKE3OTF43DPJN5R3LZHRY}

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	2026-05-17T23:42:15.984500Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

031ea20544dba65e6c6f4b7b1daf278e064f29ebf7cf9f98103a13bdb04b5bbd

Aliases

arxiv: 1906.10559 · arxiv_version: 1906.10559v1 · doi: 10.48550/arxiv.1906.10559 · pith_short_12: AMPKEBKE3OTF · pith_short_16: AMPKEBKE3OTF43DP · pith_short_8: AMPKEBKE

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/AMPKEBKE3OTF43DPJN5R3LZHRY \
  | 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: 031ea20544dba65e6c6f4b7b1daf278e064f29ebf7cf9f98103a13bdb04b5bbd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "44e524e4f5456f7df63ff2e271a88a9df0a65e06da03f2119742b751f120d092",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-06-25T14:19:20Z",
    "title_canon_sha256": "6df80865ecabcc7ed71bceec8fdb48c89eb9adccd45e55ce82f3a58a44632b64"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.10559",
    "kind": "arxiv",
    "version": 1
  }
}