Pith Number

pith:A2IG2WPD

pith:2019:A2IG2WPDLEKOHKTS6OO7BA5L5C

not attested not anchored not stored refs pending

Convex optimization for the densest subgraph and densest submatrix problems

Brendan Ames, Polina Bombina

arxiv:1904.03272 v1 · 2019-04-05 · math.OC · cs.LG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A2IG2WPDLEKOHKTS6OO7BA5L5C}

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	2026-05-17T23:49:08.480790Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06906d59e35914e3aa72f39df083abe8b24f55920913154bdb44f155f6f0b8f4

Aliases

arxiv: 1904.03272 · arxiv_version: 1904.03272v1 · doi: 10.48550/arxiv.1904.03272 · pith_short_12: A2IG2WPDLEKO · pith_short_16: A2IG2WPDLEKOHKTS · pith_short_8: A2IG2WPD

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/A2IG2WPDLEKOHKTS6OO7BA5L5C \
  | 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: 06906d59e35914e3aa72f39df083abe8b24f55920913154bdb44f155f6f0b8f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a8b3d4a3bdd9d0126a06c19f079ce851ab1a818584bebd34ba74601121639f2b",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-04-05T20:47:07Z",
    "title_canon_sha256": "78a0e9d7f0b0320528653235e947955a5e46a809cca8b0d9409f056e760e8e9f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.03272",
    "kind": "arxiv",
    "version": 1
  }
}