Pith Number

pith:EYYIZV3Z

pith:2019:EYYIZV3ZHZAWYTEH2XKCBLKRGE

not attested not anchored not stored refs pending

Doubly nonnegative relaxations are equivalent to completely positive reformulations of quadratic optimization problems with block-clique graph structures

Kim-Chuan Toh, Masakazu Kojima, Sunyoung Kim

arxiv:1903.07325 v1 · 2019-03-18 · 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{EYYIZV3ZHZAWYTEH2XKCBLKRGE}

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	2026-05-17T23:51:01.710805Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

26308cd7793e416c4c87d5d420ad5131132cc0660cf049dec44c0b9429360f81

Aliases

arxiv: 1903.07325 · arxiv_version: 1903.07325v1 · doi: 10.48550/arxiv.1903.07325 · pith_short_12: EYYIZV3ZHZAW · pith_short_16: EYYIZV3ZHZAWYTEH · pith_short_8: EYYIZV3Z

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/EYYIZV3ZHZAWYTEH2XKCBLKRGE \
  | 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: 26308cd7793e416c4c87d5d420ad5131132cc0660cf049dec44c0b9429360f81

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0e33a6c327188ea499bb126d5d5be2a31f7de7b2b4c529f2e2706a831b64f517",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-03-18T09:32:06Z",
    "title_canon_sha256": "bfe2f177ebb49d28f7b21a92f67ad5f82b661b84cddf82d794c270bb5815e73f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.07325",
    "kind": "arxiv",
    "version": 1
  }
}