Pith Number

pith:ED7HQY56

pith:2014:ED7HQY56T6AG2IO7SCD5BKTQXV

not attested not anchored not stored refs pending

Fast MATLAB assembly of FEM matrices in 2D and 3D: Edge elements

Immanuel Anjam, Jan Valdman

arxiv:1409.4618 v2 · 2014-09-16 · cs.MS · 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{ED7HQY56T6AG2IO7SCD5BKTQXV}

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	2026-05-18T02:16:20.895422Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20fe7863be9f806d21df9087d0aa70bd61ad7403382d28b71473c15193f568fe

Aliases

arxiv: 1409.4618 · arxiv_version: 1409.4618v2 · doi: 10.48550/arxiv.1409.4618 · pith_short_12: ED7HQY56T6AG · pith_short_16: ED7HQY56T6AG2IO7 · pith_short_8: ED7HQY56

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/ED7HQY56T6AG2IO7SCD5BKTQXV \
  | 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: 20fe7863be9f806d21df9087d0aa70bd61ad7403382d28b71473c15193f568fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7652998eaa5c25c2f80e8c588385cfd2ca588b00ce1cfea36f323bbda587b259",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2014-09-16T13:08:47Z",
    "title_canon_sha256": "8b9f011a5855080c5d2a70b3ea830a9c9a7139b84961f12b44aa551e636bb835"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.4618",
    "kind": "arxiv",
    "version": 2
  }
}