Pith Number

pith:67A7VIC6

pith:2017:67A7VIC6TBPHLN2ONNDDTCRNRG

not attested not anchored not stored refs pending

Using incomplete indefinite $LDL^T$ preconditioning for inexact interior point methods for linear programming

Robert Luce

arxiv:1708.04298 v2 · 2017-08-14 · 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{67A7VIC6TBPHLN2ONNDDTCRNRG}

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	2026-05-18T00:37:57.263009Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f7c1faa05e985e75b74e6b46398a2d89953d6d44bc61d8cc0e21a3663a70293a

Aliases

arxiv: 1708.04298 · arxiv_version: 1708.04298v2 · doi: 10.48550/arxiv.1708.04298 · pith_short_12: 67A7VIC6TBPH · pith_short_16: 67A7VIC6TBPHLN2O · pith_short_8: 67A7VIC6

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/67A7VIC6TBPHLN2ONNDDTCRNRG \
  | 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: f7c1faa05e985e75b74e6b46398a2d89953d6d44bc61d8cc0e21a3663a70293a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51e49441aabfc695590210c45ab473e73153db841ffc868b49d0b1daece19acc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-08-14T20:01:01Z",
    "title_canon_sha256": "19c123184e2d6bb9f70a59368445004850e512b95151a9f0465139452c016cf7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.04298",
    "kind": "arxiv",
    "version": 2
  }
}