Pith Number

pith:Q3BA2E6C

pith:2019:Q3BA2E6CZ433QSJXAAVMZ2WLXR

not attested not anchored not stored refs pending

Least Squares Auto-Tuning

Shane Barratt, Stephen Boyd

arxiv:1904.05460 v1 · 2019-04-10 · math.OC · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q3BA2E6CZ433QSJXAAVMZ2WLXR}

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	2026-05-17T23:48:49.448920Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

86c20d13c2cf37b84937002acceacbbc4b52fa8dfedc9656c482cf1d001f442d

Aliases

arxiv: 1904.05460 · arxiv_version: 1904.05460v1 · doi: 10.48550/arxiv.1904.05460 · pith_short_12: Q3BA2E6CZ433 · pith_short_16: Q3BA2E6CZ433QSJX · pith_short_8: Q3BA2E6C

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/Q3BA2E6CZ433QSJXAAVMZ2WLXR \
  | 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: 86c20d13c2cf37b84937002acceacbbc4b52fa8dfedc9656c482cf1d001f442d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85dbd5d0198737affd7f692bb17849a6ac1d7501cd2ab5f5fa9ae805f33f6c6f",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-04-10T21:53:33Z",
    "title_canon_sha256": "aa3b7a03d07e6102612f522605f3197382e5fb2e8ce2bb4ccf79ab24ef088c78"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.05460",
    "kind": "arxiv",
    "version": 1
  }
}