Pith Number

pith:7ECIHEYV

pith:2019:7ECIHEYVZYVLR7J5B4TJRTSP3X

not attested not anchored not stored refs pending

Optimality Conditions for Cardinality-Constrained Programs and a SCA Method

Baiyi Wu, Qiying Hu, Zhongyi Jiang

arxiv:1906.00504 v1 · 2019-06-02 · 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{7ECIHEYVZYVLR7J5B4TJRTSP3X}

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	2026-05-17T23:44:26.894904Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f904839315ce2ab8fd3d0f2698ce4fddc2e65ae725765b7ee4cfee09ee93b9ef

Aliases

arxiv: 1906.00504 · arxiv_version: 1906.00504v1 · doi: 10.48550/arxiv.1906.00504 · pith_short_12: 7ECIHEYVZYVL · pith_short_16: 7ECIHEYVZYVLR7J5 · pith_short_8: 7ECIHEYV

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/7ECIHEYVZYVLR7J5B4TJRTSP3X \
  | 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: f904839315ce2ab8fd3d0f2698ce4fddc2e65ae725765b7ee4cfee09ee93b9ef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8e74588e6d3fc4546c8e1621ab83b683eb5fe118867cfec9934eb885d785298f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-06-02T23:40:00Z",
    "title_canon_sha256": "05aa6a6d193da84414bf9c16b74e445cab486bd252216d8aa481fd2e053f8b0e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.00504",
    "kind": "arxiv",
    "version": 1
  }
}