Pith Number

pith:LFABIJKS

pith:2019:LFABIJKSSLQ6UC6W5PWDX23UDV

not attested not anchored not stored refs pending

A mixed finite element method with piecewise linear elements for the biharmonic equation on surfaces

Alec Jacobson, Eitan Grinspun, Max Wardetzky, Oded Stein

arxiv:1911.08029 v2 · 2019-11-19 · 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{LFABIJKSSLQ6UC6W5PWDX23UDV}

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	2026-07-05T04:16:10.717843Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

594014255292e1ea0bd6ebec3beb741d782d554732993cd429ac35b17b87e7bf

Aliases

arxiv: 1911.08029 · arxiv_version: 1911.08029v2 · doi: 10.48550/arxiv.1911.08029 · pith_short_12: LFABIJKSSLQ6 · pith_short_16: LFABIJKSSLQ6UC6W · pith_short_8: LFABIJKS

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/LFABIJKSSLQ6UC6W5PWDX23UDV \
  | 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: 594014255292e1ea0bd6ebec3beb741d782d554732993cd429ac35b17b87e7bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "042488f232859eb489bcc102403119cbcf8933cab71e98753fa01849fb406cd9",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-11-19T01:14:09Z",
    "title_canon_sha256": "247b442e724fe967c254fce9f8fd91573dfa55f1ce8bbe2b7f9af40c80656cf0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1911.08029",
    "kind": "arxiv",
    "version": 2
  }
}