Pith Number

pith:Y5BQRUWF

pith:2018:Y5BQRUWF4KCXENAWUJEESXYN72

not attested not anchored not stored refs pending

On the Complexity of Testing Attainment of the Optimal Value in Nonlinear Optimization

Amir Ali Ahmadi, Jeffrey Zhang

arxiv:1803.07683 v2 · 2018-03-20 · math.OC · cs.CC · math.AG · 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{Y5BQRUWF4KCXENAWUJEESXYN72}

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	2026-05-17T23:47:31.347908Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c74308d2c5e285723416a248495f0dfea9637fd253da8dd06f88c32aff328b9e

Aliases

arxiv: 1803.07683 · arxiv_version: 1803.07683v2 · doi: 10.48550/arxiv.1803.07683 · pith_short_12: Y5BQRUWF4KCX · pith_short_16: Y5BQRUWF4KCXENAW · pith_short_8: Y5BQRUWF

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/Y5BQRUWF4KCXENAWUJEESXYN72 \
  | 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: c74308d2c5e285723416a248495f0dfea9637fd253da8dd06f88c32aff328b9e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b35a64808118d7360084d665449ddfd155999beea9d765a387430d9e4a285983",
    "cross_cats_sorted": [
      "cs.CC",
      "math.AG",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-03-20T22:54:29Z",
    "title_canon_sha256": "4f62447af100c1d42e1f602fefc0fd3ca40977dab85a294613736ae2a926fd7b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.07683",
    "kind": "arxiv",
    "version": 2
  }
}