Pith Number

pith:N6QTL42M

pith:2016:N6QTL42MMVGPAGU7OGMGRFJBH3

not attested not anchored not stored refs pending

New Pivot Selection for Sparse Symmetric Indefinite Factorization

Duangpen Jetpipattanapong, Gun Srijuntongsiri

arxiv:1601.06812 v1 · 2016-01-25 · cs.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{N6QTL42MMVGPAGU7OGMGRFJBH3}

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	2026-05-18T01:21:59.750458Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6fa135f34c654cf01a9f71986895213eff2de925c54585144c950a5d223aa4d3

Aliases

arxiv: 1601.06812 · arxiv_version: 1601.06812v1 · doi: 10.48550/arxiv.1601.06812 · pith_short_12: N6QTL42MMVGP · pith_short_16: N6QTL42MMVGPAGU7 · pith_short_8: N6QTL42M

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/N6QTL42MMVGPAGU7OGMGRFJBH3 \
  | 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: 6fa135f34c654cf01a9f71986895213eff2de925c54585144c950a5d223aa4d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "027d4469a76645f6cb0a251f33dabe9e2e5075de1fe2363b8ef2972abacda28d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2016-01-25T21:25:41Z",
    "title_canon_sha256": "8e597ccbc7cc126522ae11cffe6b5e217c75f669352825f547a4fb86662ebb66"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.06812",
    "kind": "arxiv",
    "version": 1
  }
}