Pith Number

pith:FB4ECZFU

pith:2009:FB4ECZFUD2NWF7XADI256JGBAT

not attested not anchored not stored refs pending

A Stabilized Mixed Finite Element Method for Thin Plate Splines Based on Biorthogonal Systems

Bishnu P. Lamichhane, Markus Hegland

arxiv:0905.3203 v2 · 2009-05-20 · 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{FB4ECZFUD2NWF7XADI256JGBAT}

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	2026-05-18T03:26:09.093961Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28784164b41e9b62fee01a35df24c104e03be0f81242adb01e4659aa78dcff30

Aliases

arxiv: 0905.3203 · arxiv_version: 0905.3203v2 · doi: 10.48550/arxiv.0905.3203 · pith_short_12: FB4ECZFUD2NW · pith_short_16: FB4ECZFUD2NWF7XA · pith_short_8: FB4ECZFU

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/FB4ECZFUD2NWF7XADI256JGBAT \
  | 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: 28784164b41e9b62fee01a35df24c104e03be0f81242adb01e4659aa78dcff30

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1b79eb50d8b159354b4cc07c6d26f15fa4c325dd721a88b5dea1f17922a2a7a5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2009-05-20T00:34:32Z",
    "title_canon_sha256": "d9d93970275a759d2d873b8dc212bf2620aa9890c6c97214815177dbe4d13af4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.3203",
    "kind": "arxiv",
    "version": 2
  }
}