Pith Number

pith:5BYZZ2X7

pith:2019:5BYZZ2X7FMB7EL3JAH33P6QIGD

not attested not anchored not stored refs pending

$\phi$-FEM: a finite element method on domains defined by level-sets

Alexei Lozinski, Michel Duprez

arxiv:1903.03703 v2 · 2019-03-09 · 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{5BYZZ2X7FMB7EL3JAH33P6QIGD}

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	2026-05-17T23:41:21.737041Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e8719ceaff2b03f22f6901f7b7fa0830d41d48672b45909fc82b68e17d4d4205

Aliases

arxiv: 1903.03703 · arxiv_version: 1903.03703v2 · doi: 10.48550/arxiv.1903.03703 · pith_short_12: 5BYZZ2X7FMB7 · pith_short_16: 5BYZZ2X7FMB7EL3J · pith_short_8: 5BYZZ2X7

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/5BYZZ2X7FMB7EL3JAH33P6QIGD \
  | 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: e8719ceaff2b03f22f6901f7b7fa0830d41d48672b45909fc82b68e17d4d4205

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e8c3116cf7289dd2b188793d9fd47e10bb157109ee033ec774c915be09b2841c",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-03-09T00:14:57Z",
    "title_canon_sha256": "aec42a8abc75a0313b7deac220ae10673be927b416ad29e707df87e85eb490e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.03703",
    "kind": "arxiv",
    "version": 2
  }
}