Pith Number

pith:UDJAYST2

pith:2011:UDJAYST2CZIZKR3F2J6JBXUXDR

not attested not anchored not stored refs pending

Computer Algebra meets Finite Elements: an Efficient Implementation for Maxwell's Equations

Christoph Koutschan, Christoph Lehrenfeld, Joachim Schoeberl

arxiv:1104.4208 v2 · 2011-04-21 · math.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{UDJAYST2CZIZKR3F2J6JBXUXDR}

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	2026-05-18T04:05:03.959636Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a0d20c4a7a1651954765d27c90de971c68c37317f2700b0c33624dde87435d28

Aliases

arxiv: 1104.4208 · arxiv_version: 1104.4208v2 · doi: 10.48550/arxiv.1104.4208 · pith_short_12: UDJAYST2CZIZ · pith_short_16: UDJAYST2CZIZKR3F · pith_short_8: UDJAYST2

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/UDJAYST2CZIZKR3F2J6JBXUXDR \
  | 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: a0d20c4a7a1651954765d27c90de971c68c37317f2700b0c33624dde87435d28

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d79f8d19f42efb8929bb29571e58cdcd11f4fb64e70f63bd8cfe1f07b5474899",
    "cross_cats_sorted": [
      "cs.SC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2011-04-21T09:02:17Z",
    "title_canon_sha256": "76c3b84289e50c929a7284a25af25309290724b113e865547a71936a7de16ec9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.4208",
    "kind": "arxiv",
    "version": 2
  }
}