Pith Number

pith:YPRQFHNW

pith:2018:YPRQFHNWH3TB4URAIJNBLDWLM4

not attested not anchored not stored refs pending

Quasi-Newton approaches to Interior Point Methods for quadratic problems

(2) State University of Maring\'a, Brazil), F. N. C. Sobral (2) ((1) University of Edinburgh, J. Gondzio (1), Paran\'a, Scotland, United Kingdom

arxiv:1806.09871 v1 · 2018-06-26 · math.OC · 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{YPRQFHNWH3TB4URAIJNBLDWLM4}

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	2026-05-18T00:12:16.464106Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3e3029db63ee61e5220425a158ecb673c6c9a824d7dddaa78b718da8655ee32

Aliases

arxiv: 1806.09871 · arxiv_version: 1806.09871v1 · doi: 10.48550/arxiv.1806.09871 · pith_short_12: YPRQFHNWH3TB · pith_short_16: YPRQFHNWH3TB4URA · pith_short_8: YPRQFHNW

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/YPRQFHNWH3TB4URAIJNBLDWLM4 \
  | 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: c3e3029db63ee61e5220425a158ecb673c6c9a824d7dddaa78b718da8655ee32

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d138c5211b890acfc2ae6a1c676ab5347e39f47b3957c9702d887f2f6beaa7ec",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-06-26T09:40:55Z",
    "title_canon_sha256": "fd784e18ca18cf253f6a1f8ee718cb8f079d89c202cea0c9697dfb4d1ba690ab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.09871",
    "kind": "arxiv",
    "version": 1
  }
}