Pith Number

pith:UJQQBXD7

pith:2012:UJQQBXD7CLFTWUSZJRLTJXER7T

not attested not anchored not stored refs pending

Unified Form Language: A domain-specific language for weak formulations of partial differential equations

Anders Logg, Garth N. Wells, Kristian B. Oelgaard, Marie E. Rognes, Martin S. Alnaes

arxiv:1211.4047 v2 · 2012-11-16 · cs.MS · cs.NA · cs.SC

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UJQQBXD7CLFTWUSZJRLTJXER7T}

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	2026-05-18T03:27:03.239361Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a26100dc7f12cb3b52594c5734dc91fcc367a809f9eea1b0554239fb3ac8d29d

Aliases

arxiv: 1211.4047 · arxiv_version: 1211.4047v2 · doi: 10.48550/arxiv.1211.4047 · pith_short_12: UJQQBXD7CLFT · pith_short_16: UJQQBXD7CLFTWUSZ · pith_short_8: UJQQBXD7

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/UJQQBXD7CLFTWUSZJRLTJXER7T \
  | 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: a26100dc7f12cb3b52594c5734dc91fcc367a809f9eea1b0554239fb3ac8d29d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "36bdc368dd1414c27243c36336f25956bcee80de95d210bbba533a422de4df20",
    "cross_cats_sorted": [
      "cs.NA",
      "cs.SC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2012-11-16T21:56:02Z",
    "title_canon_sha256": "d7ccd4bd7eb6e9cbf8ded7b27e731a5e67c6dc6dcba3645abae1d34eaf12d504"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.4047",
    "kind": "arxiv",
    "version": 2
  }
}