Pith Number

pith:MRNP5YPP

pith:2016:MRNP5YPPQNZNHCVPEIQNLZF6U4

not attested not anchored not stored refs pending

A new relaxed HSS preconditioner for saddle point problems

Davod Khojasteh Salkuyeh, Mohsen Masoudi

arxiv:1603.02120 v2 · 2016-03-07 · 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{MRNP5YPPQNZNHCVPEIQNLZF6U4}

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	2026-05-18T01:12:01.468669Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

645afee1ef8372d38aaf2220d5e4bea70025b4eacf314ab6749ed49df8ff729f

Aliases

arxiv: 1603.02120 · arxiv_version: 1603.02120v2 · doi: 10.48550/arxiv.1603.02120 · pith_short_12: MRNP5YPPQNZN · pith_short_16: MRNP5YPPQNZNHCVP · pith_short_8: MRNP5YPP

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/MRNP5YPPQNZNHCVPEIQNLZF6U4 \
  | 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: 645afee1ef8372d38aaf2220d5e4bea70025b4eacf314ab6749ed49df8ff729f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8916d561ff7f63b5d6f2f78c53e76739c5e5853f8c175a7521e8145532fbe312",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2016-03-07T15:55:16Z",
    "title_canon_sha256": "9cee36e3e1544c93ebbabd72297a275064477e2bc799b97b025de057c4111f5d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.02120",
    "kind": "arxiv",
    "version": 2
  }
}