Pith Number

pith:XSB5YSG4

pith:2014:XSB5YSG4M6XFITBKCPZQMQMVGQ

not attested not anchored not stored refs pending

Bootstrap Algebraic Multigrid: status report, open problems, and outlook

Achi Brandt, Ira Livshits, James Brannick, Karsten Kahl

arxiv:1406.1819 v1 · 2014-06-06 · 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{XSB5YSG4M6XFITBKCPZQMQMVGQ}

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	2026-05-18T02:50:12.470726Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc83dc48dc67ae544c2a13f30641953422a95de3aaf05da1464f3ed340eb3dbc

Aliases

arxiv: 1406.1819 · arxiv_version: 1406.1819v1 · doi: 10.48550/arxiv.1406.1819 · pith_short_12: XSB5YSG4M6XF · pith_short_16: XSB5YSG4M6XFITBK · pith_short_8: XSB5YSG4

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/XSB5YSG4M6XFITBKCPZQMQMVGQ \
  | 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: bc83dc48dc67ae544c2a13f30641953422a95de3aaf05da1464f3ed340eb3dbc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cb5e5ff46ce55832c31ea8b0125cec6aba9cf3abf83252bde2cc9812f77c38bd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-06-06T21:29:06Z",
    "title_canon_sha256": "bda7b1ed6dbfe0ca5b81fd7534d6f4a0d4d63fceb941b7a1e5b7e32659da1443"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.1819",
    "kind": "arxiv",
    "version": 1
  }
}