Pith Number

pith:CQP3NC4C

pith:2018:CQP3NC4CRYCODDR6BULZAUC3ZI

not attested not anchored not stored refs pending

An interior point sequential quadratic programming-type method for log-determinant semi-infinite programs

Masao Fukushima, Takayuki Okuno

arxiv:1809.08838 v1 · 2018-09-24 · 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{CQP3NC4CRYCODDR6BULZAUC3ZI}

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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	2026-05-18T00:05:03.415686Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

141fb68b828e04e18e3e0d1790505bca3ee0c7f60a48c5f241bb804d4759e8f1

Aliases

arxiv: 1809.08838 · arxiv_version: 1809.08838v1 · doi: 10.48550/arxiv.1809.08838 · pith_short_12: CQP3NC4CRYCO · pith_short_16: CQP3NC4CRYCODDR6 · pith_short_8: CQP3NC4C

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/CQP3NC4CRYCODDR6BULZAUC3ZI \
  | 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: 141fb68b828e04e18e3e0d1790505bca3ee0c7f60a48c5f241bb804d4759e8f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f040d755d3f6aad55a96ad0c122f1b58392c976e1c8a2c1c7ad3ff78424d6c6e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-09-24T11:03:43Z",
    "title_canon_sha256": "4dbb44c1a5a19941b677f3187390b36d578bc261ba22dd42a3b8394d045976c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.08838",
    "kind": "arxiv",
    "version": 1
  }
}