Pith Number

pith:5GD73KIB

pith:2020:5GD73KIBA7H5SMCPXDKT2VEOPA

not attested not anchored not stored refs pending

2x2 convexifications for convex quadratic optimization with indicator variables

Alper Atamt\"urk, Andr\'es G\'omez, Shaoning Han

arxiv:2004.07448 v1 · 2020-04-16 · 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{5GD73KIBA7H5SMCPXDKT2VEOPA}

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	2026-07-05T00:55:33.345170Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e987fda90107cfd9304fb8d53d548e7816e0955dddda397d4161efcbcf9add22

Aliases

arxiv: 2004.07448 · arxiv_version: 2004.07448v1 · doi: 10.48550/arxiv.2004.07448 · pith_short_12: 5GD73KIBA7H5 · pith_short_16: 5GD73KIBA7H5SMCP · pith_short_8: 5GD73KIB

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/5GD73KIBA7H5SMCPXDKT2VEOPA \
  | 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: e987fda90107cfd9304fb8d53d548e7816e0955dddda397d4161efcbcf9add22

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "caa3d9834b589930c9671aa0886f3496a63d76a1166a51862a933a5350675b82",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2020-04-16T04:13:13Z",
    "title_canon_sha256": "5b61ad914a677f8a2c810c7c3936c17d2ca8e62688b69757b4f72ccdcb622728"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.07448",
    "kind": "arxiv",
    "version": 1
  }
}