Pith Number

pith:5HKH7UMN

pith:2017:5HKH7UMNKFUY56UK6GXLT54NCI

not attested not anchored not stored refs pending

A two-phase gradient method for quadratic programming problems with a single linear constraint and bounds on the variables

Daniela di Serafino, Gerardo Toraldo, Jesse Barlow, Marco Viola

arxiv:1705.01797 v4 · 2017-05-04 · math.OC · 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{5HKH7UMNKFUY56UK6GXLT54NCI}

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	2026-05-17T23:53:52.326763Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e9d47fd18d51698efa8af1aeb9f78d123f7527fbd2bb4827254f263e78bbb58f

Aliases

arxiv: 1705.01797 · arxiv_version: 1705.01797v4 · doi: 10.48550/arxiv.1705.01797 · pith_short_12: 5HKH7UMNKFUY · pith_short_16: 5HKH7UMNKFUY56UK · pith_short_8: 5HKH7UMN

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/5HKH7UMNKFUY56UK6GXLT54NCI \
  | 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: e9d47fd18d51698efa8af1aeb9f78d123f7527fbd2bb4827254f263e78bbb58f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a954607d897ca245f6aa5ff12d585f7e617e708c5f01ef5ec3b16f4441c6ed8e",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2017-05-04T11:31:59Z",
    "title_canon_sha256": "98d21500b240d9cedce6559f1075dbb91d164831149e66c3d8b8c0a305ddafaf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.01797",
    "kind": "arxiv",
    "version": 4
  }
}