Pith Number

pith:DGHWRQMX

pith:2025:DGHWRQMXU4TOAZIYEBVHISI3IN

not attested not anchored not stored refs pending

Accelerating MPGP-type Methods Through Preconditioning

David Hor\'ak, Jakub Kru\v{z}\'ik

arxiv:2507.00617 v2 · 2025-07-01 · math.NA · cs.NA · math.OC

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DGHWRQMXU4TOAZIYEBVHISI3IN}

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	2026-05-20T00:05:30.443939Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

198f68c197a726e06518206a74491b437a6bbe0e4ddc00b7736b93e466ce74f2

Aliases

arxiv: 2507.00617 · arxiv_version: 2507.00617v2 · doi: 10.48550/arxiv.2507.00617 · pith_short_12: DGHWRQMXU4TO · pith_short_16: DGHWRQMXU4TOAZIY · pith_short_8: DGHWRQMX

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/DGHWRQMXU4TOAZIYEBVHISI3IN \
  | 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: 198f68c197a726e06518206a74491b437a6bbe0e4ddc00b7736b93e466ce74f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ff12024c1cee2d4da758960af79b237d90bb741d56ed84795071bdc400cf13c",
    "cross_cats_sorted": [
      "cs.NA",
      "math.OC"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2025-07-01T09:56:40Z",
    "title_canon_sha256": "721a9b113d08ae9dcc102a19dd53356cbae0cce960bc31c413a8fd1139aca56a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.00617",
    "kind": "arxiv",
    "version": 2
  }
}