Pith Number

pith:AJE6TH23

pith:2013:AJE6TH23QJNFQCQCSNFKOJRZOF

not attested not anchored not stored refs pending

Parallel Unsmoothed Aggregation Algebraic Multigrid Algorithms on GPUs

James Brannick, Ludmil Zikatanov, Xiaozhe Hu, Yao Chen

arxiv:1302.2547 v1 · 2013-02-11 · 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{AJE6TH23QJNFQCQCSNFKOJRZOF}

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	2026-05-18T03:34:00.877960Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0249e99f5b825a580a02934aa7263971449658463fe3da451320cf5eba4d2070

Aliases

arxiv: 1302.2547 · arxiv_version: 1302.2547v1 · doi: 10.48550/arxiv.1302.2547 · pith_short_12: AJE6TH23QJNF · pith_short_16: AJE6TH23QJNFQCQC · pith_short_8: AJE6TH23

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/AJE6TH23QJNFQCQCSNFKOJRZOF \
  | 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: 0249e99f5b825a580a02934aa7263971449658463fe3da451320cf5eba4d2070

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0359c86fca65af5558d22cd63c7cc6d04ed83fa941b41bee3dbad77ad58adb3f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-02-11T17:35:52Z",
    "title_canon_sha256": "1e7f035bd46c1435f474e8b72826ef06f2965e102a42ed3e0a54eedaa5079dbd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.2547",
    "kind": "arxiv",
    "version": 1
  }
}