Pith Number

pith:3KR6OHLX

pith:2018:3KR6OHLXGG7IJ2XBKV5N7PTPB5

not attested not anchored not stored refs pending

A Projection Method for Metric-Constrained Optimization

Anthony Wirth, David Gleich, James Saunderson, Nate Veldt

arxiv:1806.01678 v1 · 2018-06-05 · cs.NA · cs.LG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3KR6OHLXGG7IJ2XBKV5N7PTPB5}

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	2026-05-18T00:14:12.065427Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

daa3e71d7731be84eae1557adfbe6f0f6182090ace67288e3e339de58234d36c

Aliases

arxiv: 1806.01678 · arxiv_version: 1806.01678v1 · doi: 10.48550/arxiv.1806.01678 · pith_short_12: 3KR6OHLXGG7I · pith_short_16: 3KR6OHLXGG7IJ2XB · pith_short_8: 3KR6OHLX

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/3KR6OHLXGG7IJ2XBKV5N7PTPB5 \
  | 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: daa3e71d7731be84eae1557adfbe6f0f6182090ace67288e3e339de58234d36c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5a4f1f3fe4cc9bb88a0f57e4a29f746e39dd25340197aa10356327160881389f",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2018-06-05T13:25:30Z",
    "title_canon_sha256": "edda2933277d36d65199128366f5b68573c71cd890a42533d0182217087a1feb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.01678",
    "kind": "arxiv",
    "version": 1
  }
}