Pith Number

pith:5Q3KCVIK

pith:2011:5Q3KCVIKS3RWZQ4BAKXLRCBQH6

not attested not anchored not stored refs pending

Unstructured Geometric Multigrid in Two and Three Dimensions on Complex and Graded Meshes

L. Ridgway Scott, Matthew G. Knepley, Peter R. Brune

arxiv:1104.0261 v2 · 2011-04-01 · cs.NA · cs.CG · 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{5Q3KCVIKS3RWZQ4BAKXLRCBQH6}

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	2026-05-18T02:22:11.371244Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec36a1550a96e36cc38102aeb888303f938e2126f4c9663a5e47cfd44904b5b7

Aliases

arxiv: 1104.0261 · arxiv_version: 1104.0261v2 · doi: 10.48550/arxiv.1104.0261 · pith_short_12: 5Q3KCVIKS3RW · pith_short_16: 5Q3KCVIKS3RWZQ4B · pith_short_8: 5Q3KCVIK

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/5Q3KCVIKS3RWZQ4BAKXLRCBQH6 \
  | 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: ec36a1550a96e36cc38102aeb888303f938e2126f4c9663a5e47cfd44904b5b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e8aef3ea0fc368062ac0df0bbd1769e7de45c7d3d553a9fc17d70c9091c79d58",
    "cross_cats_sorted": [
      "cs.CG",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2011-04-01T21:09:17Z",
    "title_canon_sha256": "1a93b26f8473ea3ad37476838c014aa4cd145bc4e5a7ad672b7dfc5eb3a604e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.0261",
    "kind": "arxiv",
    "version": 2
  }
}