Pith Number

pith:BWSG3LQ3

pith:2016:BWSG3LQ3EH3HDKJVROMZCREJG7

not attested not anchored not stored refs pending

Rank Restricted Semidefinite Matrices and Image Closedness

Henry Wolkowicz, Ian Davidson

arxiv:1610.09993 v1 · 2016-10-31 · 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{BWSG3LQ3EH3HDKJVROMZCREJG7}

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	2026-05-18T01:00:46.775865Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0da46dae1b21f671a9358b9991448937d5ca18c1d16bc19726d39cb8a71ceb95

Aliases

arxiv: 1610.09993 · arxiv_version: 1610.09993v1 · doi: 10.48550/arxiv.1610.09993 · pith_short_12: BWSG3LQ3EH3H · pith_short_16: BWSG3LQ3EH3HDKJV · pith_short_8: BWSG3LQ3

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/BWSG3LQ3EH3HDKJVROMZCREJG7 \
  | 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: 0da46dae1b21f671a9358b9991448937d5ca18c1d16bc19726d39cb8a71ceb95

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3570bf17e9c154df795e7d29b80c4f2991bf7d377028c3fe4ac3391e2a1889c8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2016-10-31T16:09:37Z",
    "title_canon_sha256": "5a84e07f57d932956f03d31cfbb64fccf851ab09d442a7a3c275eb259110da01"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1610.09993",
    "kind": "arxiv",
    "version": 1
  }
}