Pith Number

pith:ADN2HJXK

pith:2015:ADN2HJXKIBNILAZEHI4YZHL4W2

not attested not anchored not stored refs pending

Optimization over Structured Subsets of Positive Semidefinite Matrices via Column Generation

Amir Ali Ahmadi, Georgina Hall, Sanjeeb Dash

arxiv:1512.05402 v2 · 2015-12-16 · math.OC · cs.DM · cs.SY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ADN2HJXKIBNILAZEHI4YZHL4W2}

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	2026-05-18T01:19:15.797298Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

00dba3a6ea405a8583243a398c9d7cb68f7fcfb817da11a54e9148cc4b652fa4

Aliases

arxiv: 1512.05402 · arxiv_version: 1512.05402v2 · doi: 10.48550/arxiv.1512.05402 · pith_short_12: ADN2HJXKIBNI · pith_short_16: ADN2HJXKIBNILAZE · pith_short_8: ADN2HJXK

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/ADN2HJXKIBNILAZEHI4YZHL4W2 \
  | 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: 00dba3a6ea405a8583243a398c9d7cb68f7fcfb817da11a54e9148cc4b652fa4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "befac70f447a7cbbe71d21a5ef8a9df420610260861037f54bf1a2038ac84ac2",
    "cross_cats_sorted": [
      "cs.DM",
      "cs.SY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2015-12-16T22:48:52Z",
    "title_canon_sha256": "6abd52bde60b0a111321748a5365925472d802981563cf3f4747d80cf331bf42"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.05402",
    "kind": "arxiv",
    "version": 2
  }
}