Pith Number

pith:NPKLBII2

pith:2021:NPKLBII2EVMEBKK4TWLIG5TUH3

not attested not anchored not stored refs pending

On unbounded polyhedral convex set optimization problems

Andreas L\"ohne, Niklas Hey

arxiv:2111.02173 v2 · 2021-11-03 · 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{NPKLBII2EVMEBKK4TWLIG5TUH3}

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	2026-07-05T06:03:44.502621Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bd4b0a11a255840a95c9d968376743efd730a4218501bd34c86ad2400f18033

Aliases

arxiv: 2111.02173 · arxiv_version: 2111.02173v2 · doi: 10.48550/arxiv.2111.02173 · pith_short_12: NPKLBII2EVME · pith_short_16: NPKLBII2EVMEBKK4 · pith_short_8: NPKLBII2

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/NPKLBII2EVMEBKK4TWLIG5TUH3 \
  | 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: 6bd4b0a11a255840a95c9d968376743efd730a4218501bd34c86ad2400f18033

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1766afa53b1a6fc707c03a80d1e6d2958b028ed0f3b97bc8fb8fde890674512b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2021-11-03T12:24:35Z",
    "title_canon_sha256": "8fa9c68273750eecd94b9988a5ac6d71107960902f8eb5fc446a9954eadb8568"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.02173",
    "kind": "arxiv",
    "version": 2
  }
}