Pith Number

pith:HPUW6BS5

pith:2007:HPUW6BS5GB6ULQQR6FHT5ZZTN6

not attested not anchored not stored refs pending

Block Locally Optimal Preconditioned Eigenvalue Xolvers (BLOPEX) in hypre and PETSc

A. V. Knyazev, E. E. Ovtchinnikov, I. Lashuk, M. E. Argentati

arxiv:0705.2626 v1 · 2007-05-18 · cs.MS · cs.NA · 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{HPUW6BS5GB6ULQQR6FHT5ZZTN6}

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	2026-06-03T22:06:00.841620Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3be96f065d307d45c211f14f3ee7336f81961db9f555b93d365da5da14584e06

Aliases

arxiv: 0705.2626 · arxiv_version: 0705.2626v1 · doi: 10.48550/arxiv.0705.2626 · pith_short_12: HPUW6BS5GB6U · pith_short_16: HPUW6BS5GB6ULQQR · pith_short_8: HPUW6BS5

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/HPUW6BS5GB6ULQQR6FHT5ZZTN6 \
  | 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: 3be96f065d307d45c211f14f3ee7336f81961db9f555b93d365da5da14584e06

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da0ddbf65c8daa7711d660cedb850d0c0f9bd952a411d45ed665a0cff4597ff5",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "",
    "primary_cat": "cs.MS",
    "submitted_at": "2007-05-18T02:25:16Z",
    "title_canon_sha256": "360d4623930a0a00a0ffa38b2709c815484393a095fc603e2e929205e6df7b73"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0705.2626",
    "kind": "arxiv",
    "version": 1
  }
}