Pith Number

pith:5OGAEJJE

pith:2019:5OGAEJJEDUCN2PH3M6TZAUI5BY

not attested not anchored not stored refs pending

Accuracy of approximate projection to the semidefinite cone

Nikitas Rontsis, Paul J. Goulart, Yuji Nakatsukasa

arxiv:1908.01606 v2 · 2019-08-05 · math.NA · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5OGAEJJEDUCN2PH3M6TZAUI5BY}

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	2026-07-04T23:56:49.294273Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eb8c0225241d04dd3cfb67a790511d0e1c43bef01f2e828b9beb3a68f1d87878

Aliases

arxiv: 1908.01606 · arxiv_version: 1908.01606v2 · doi: 10.48550/arxiv.1908.01606 · pith_short_12: 5OGAEJJEDUCN · pith_short_16: 5OGAEJJEDUCN2PH3 · pith_short_8: 5OGAEJJE

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/5OGAEJJEDUCN2PH3M6TZAUI5BY \
  | 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: eb8c0225241d04dd3cfb67a790511d0e1c43bef01f2e828b9beb3a68f1d87878

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "60720138297a406d0cbe3fb0a88fc134a6e48ccdacc9eb6eb54dc6a4f47f5dd9",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-08-05T13:21:50Z",
    "title_canon_sha256": "9d8b460eff85a748b1987d6b21341740813a2c21a1a3bb7493cec1545ecf6b82"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.01606",
    "kind": "arxiv",
    "version": 2
  }
}