Pith Number

pith:M3FJ4ZNG

pith:2019:M3FJ4ZNGZRZTSDLVQCQKGXZGPB

not attested not anchored not stored refs pending

MFEM: a modular finite element methods library

Aaron Fisher, Andrew Barker, David Medina, Jakub Cerveny, Jamie Bramwell, Jean-Sylvain Camier, Johann Dahm, Julian Andrej, Mark Stowell, Robert Anderson, Stefano Zampini, Tzanio Kolev, Veselin Dobrev, Vladimir Tomov, Will Pazner, Yohann Dudouit

arxiv:1911.09220 v2 · 2019-11-20 · cs.MS · cs.NA · 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{M3FJ4ZNGZRZTSDLVQCQKGXZGPB}

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	2026-07-05T01:18:16.748660Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

66ca9e65a6cc73390d7580a0a35f26785ec077a99db8307d9e3d0baabc6524fc

Aliases

arxiv: 1911.09220 · arxiv_version: 1911.09220v2 · doi: 10.48550/arxiv.1911.09220 · pith_short_12: M3FJ4ZNGZRZT · pith_short_16: M3FJ4ZNGZRZTSDLV · pith_short_8: M3FJ4ZNG

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/M3FJ4ZNGZRZTSDLVQCQKGXZGPB \
  | 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: 66ca9e65a6cc73390d7580a0a35f26785ec077a99db8307d9e3d0baabc6524fc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "810fea7b08eea92d7f0c461b69b9b6c39c20086c9e17fa5a789ac1ac44a6d8a0",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2019-11-20T23:49:09Z",
    "title_canon_sha256": "47c7a9bc0aedbd80d6f3ef9fdde98014c2da616de1b720408eec6572e47fc193"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1911.09220",
    "kind": "arxiv",
    "version": 2
  }
}