Pith Number

pith:PA77AWIE

pith:2015:PA77AWIEVRXNPMLTOW442ZFLPS

not attested not anchored not stored refs pending

A preconditioner based on the shift-splitting method for generalized saddle point problems

Davod Hezari, Davod Khojasteh Salkuyeh, Mohsen Masoudi

arxiv:1506.04661 v1 · 2015-06-15 · 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{PA77AWIEVRXNPMLTOW442ZFLPS}

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	2026-05-18T01:49:25.253919Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

783ff05904ac6ed7b17375b9cd64ab7cb3979e9d498b957d62ae6108ee73a2ba

Aliases

arxiv: 1506.04661 · arxiv_version: 1506.04661v1 · doi: 10.48550/arxiv.1506.04661 · pith_short_12: PA77AWIEVRXN · pith_short_16: PA77AWIEVRXNPMLT · pith_short_8: PA77AWIE

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/PA77AWIEVRXNPMLTOW442ZFLPS \
  | 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: 783ff05904ac6ed7b17375b9cd64ab7cb3979e9d498b957d62ae6108ee73a2ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "767be372be50b58b2c98ff9b1e2dc09c2786c99c97d54658ec9f9b9a3d2e73ad",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-06-15T16:37:47Z",
    "title_canon_sha256": "2a14c39b02caa1b4e756690d4eac88ee628c35d9c78223dea3b816427813960d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.04661",
    "kind": "arxiv",
    "version": 1
  }
}