Pith Number

pith:KY7MZYSM

pith:2019:KY7MZYSMVB4XP23Q32J5D3WUBD

not attested not anchored not stored refs pending

Error Bounds and Singularity Degree in Semidefinite Programming

Henry Wolkowicz, Hugo J. Woerdeman, Stefan Sremac

arxiv:1908.04357 v1 · 2019-08-12 · 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{KY7MZYSMVB4XP23Q32J5D3WUBD}

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	2026-07-04T23:54:30.023696Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

563ecce24ca87977eb70de93d1eed408cb366e488830402c27b74298d56a12df

Aliases

arxiv: 1908.04357 · arxiv_version: 1908.04357v1 · doi: 10.48550/arxiv.1908.04357 · pith_short_12: KY7MZYSMVB4X · pith_short_16: KY7MZYSMVB4XP23Q · pith_short_8: KY7MZYSM

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/KY7MZYSMVB4XP23Q32J5D3WUBD \
  | 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: 563ecce24ca87977eb70de93d1eed408cb366e488830402c27b74298d56a12df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e62860b979aacf8f327a2a346ed01774b5ce38b0baef42a42fbc9ead4887f4ec",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-08-12T19:52:09Z",
    "title_canon_sha256": "da2fe5d8784d748b5e8676cb501299b2dac2b900fd973a70028da77752122a93"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.04357",
    "kind": "arxiv",
    "version": 1
  }
}