Pith Number

pith:PB5M67G5

pith:2021:PB5M67G5LQVAWWVSFXJUOCOIQV

not attested not anchored not stored refs pending

An unfitted finite element method using level set functions for extrapolation into deformable diffuse interfaces

Dmitri Kuzmin, Jan-Phillip B\"acker

arxiv:2112.07305 v3 · 2021-12-14 · 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{PB5M67G5LQVAWWVSFXJUOCOIQV}

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	2026-07-05T04:21:59.914775Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

787acf7cdd5c2a0b5ab22dd34709c8856dd6636de0d12e8cb7fc345ad1e820af

Aliases

arxiv: 2112.07305 · arxiv_version: 2112.07305v3 · doi: 10.48550/arxiv.2112.07305 · pith_short_12: PB5M67G5LQVA · pith_short_16: PB5M67G5LQVAWWVS · pith_short_8: PB5M67G5

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/PB5M67G5LQVAWWVSFXJUOCOIQV \
  | 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: 787acf7cdd5c2a0b5ab22dd34709c8856dd6636de0d12e8cb7fc345ad1e820af

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "68e41f9e8767cde25df7b21345ee866680a68e35b56e9f406371746390072880",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2021-12-14T11:22:38Z",
    "title_canon_sha256": "eaba05fc15acf6239efa1278d2a2ef407bceb2076ee308ff8474224e23bf5d18"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.07305",
    "kind": "arxiv",
    "version": 3
  }
}