Pith Number

pith:DDNL74XW

pith:2012:DDNL74XWGCJMYH2432D6S4YZKF

not attested not anchored not stored refs pending

Forbidden minor characterizations for low-rank optimal solutions to semidefinite programs over the elliptope

Antonios Varvitsiotis, Marianna Eisenberg-Nagy, Monique Laurent

arxiv:1205.2040 v2 · 2012-05-09 · math.CO · cs.DM · 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{DDNL74XWGCJMYH2432D6S4YZKF}

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	2026-05-18T03:02:57.501276Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18dabff2f63092cc1f5cde87e973195176f0e8c34119c34fb84075508f40b0dd

Aliases

arxiv: 1205.2040 · arxiv_version: 1205.2040v2 · doi: 10.48550/arxiv.1205.2040 · pith_short_12: DDNL74XWGCJM · pith_short_16: DDNL74XWGCJMYH24 · pith_short_8: DDNL74XW

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/DDNL74XWGCJMYH2432D6S4YZKF \
  | 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: 18dabff2f63092cc1f5cde87e973195176f0e8c34119c34fb84075508f40b0dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87aacc8f96dbe826b1b41037db355a55ff16ff3b866d3fe0a468455f897be3f0",
    "cross_cats_sorted": [
      "cs.DM",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2012-05-09T17:20:59Z",
    "title_canon_sha256": "a7e0ef21e630203cb92b1924cafa40047185b68393a7e2297e9b7800cd3bfcb3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.2040",
    "kind": "arxiv",
    "version": 2
  }
}