Pith Number

pith:FBJU46R3

pith:2018:FBJU46R3X5A3232SL7T64KZKFQ

not attested not anchored not stored refs pending

Exact Semidefinite Formulations for a Class of (Random and Non-Random) Nonconvex Quadratic Programs

Samuel Burer, Yinyu Ye

arxiv:1802.02688 v2 · 2018-02-08 · 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{FBJU46R3X5A3232SL7T64KZKFQ}

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	2026-05-18T00:01:19.645662Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28534e7a3bbf41bd6f525fe7ee2b2a2c2c452a89fbc805ad74564ea8e974105e

Aliases

arxiv: 1802.02688 · arxiv_version: 1802.02688v2 · doi: 10.48550/arxiv.1802.02688 · pith_short_12: FBJU46R3X5A3 · pith_short_16: FBJU46R3X5A3232S · pith_short_8: FBJU46R3

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/FBJU46R3X5A3232SL7T64KZKFQ \
  | 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: 28534e7a3bbf41bd6f525fe7ee2b2a2c2c452a89fbc805ad74564ea8e974105e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f73a2211846eceb213e1ee8b900a93450fbee5960f1d07205ceb6000155618a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-02-08T01:46:08Z",
    "title_canon_sha256": "815cc901b5a76c458d7a2bad507d0921beba6654963956a1e6236a78b2ea97f5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.02688",
    "kind": "arxiv",
    "version": 2
  }
}