Pith Number

pith:2FPYWB57

pith:2020:2FPYWB57AMAMILCPFMMXYZ675W

not attested not anchored not stored refs pending

Gradient Projection for Solving Quadratic Programs with Standard Simplex Constraints

Youwei Liang

arxiv:2006.06934 v3 · 2020-06-12 · math.OC

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2FPYWB57AMAMILCPFMMXYZ675W}

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	2026-07-05T01:19:53.180495Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d15f8b07bf0300c42c4f2b197c67dfedbcf0f08f7132007586d8dcc17924e539

Aliases

arxiv: 2006.06934 · arxiv_version: 2006.06934v3 · doi: 10.48550/arxiv.2006.06934 · pith_short_12: 2FPYWB57AMAM · pith_short_16: 2FPYWB57AMAMILCP · pith_short_8: 2FPYWB57

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/2FPYWB57AMAMILCPFMMXYZ675W \
  | 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: d15f8b07bf0300c42c4f2b197c67dfedbcf0f08f7132007586d8dcc17924e539

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd72fbcf9023e588d49adc60b868b09f5d4fe95a9bb816355da7e1e92a0ff39f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2020-06-12T03:55:01Z",
    "title_canon_sha256": "c545fbb4556d4bc3e19a99aae296a1250d3de519b729038c95551495042b5abb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2006.06934",
    "kind": "arxiv",
    "version": 3
  }
}