Pith Number

pith:KHA4F7UG

pith:2014:KHA4F7UGOUFM5JWOFZM5L4ZKPE

not attested not anchored not stored refs pending

Test Problem Construction for Single-Objective Bilevel Optimization

Ankur Sinha, Kalyanmoy Deb, Pekka Malo

arxiv:1401.1942 v3 · 2014-01-09 · cs.MS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KHA4F7UGOUFM5JWOFZM5L4ZKPE}

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	2026-05-18T01:08:44.953372Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

51c1c2fe86750acea6ce2e59d5f32a793a8855de9553772c8da11b40dcbc31da

Aliases

arxiv: 1401.1942 · arxiv_version: 1401.1942v3 · doi: 10.48550/arxiv.1401.1942 · pith_short_12: KHA4F7UGOUFM · pith_short_16: KHA4F7UGOUFM5JWO · pith_short_8: KHA4F7UG

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/KHA4F7UGOUFM5JWOFZM5L4ZKPE \
  | 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: 51c1c2fe86750acea6ce2e59d5f32a793a8855de9553772c8da11b40dcbc31da

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e59e21a7f9eda3bc41497a6037f873262fd38afde94c558cf23d0fba1eb0dded",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2014-01-09T10:22:26Z",
    "title_canon_sha256": "dc47469f11bf9cd707389a9ccfc73a2fdb6d73b4ae7e6e656664e9195098a58a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.1942",
    "kind": "arxiv",
    "version": 3
  }
}