Pith Number

pith:GH5JH3SW

pith:2021:GH5JH3SWTH6HUP4OFSDWIQDN5V

not attested not anchored not stored refs pending

Hashing embeddings of optimal dimension, with applications to linear least squares

Coralia Cartis, Jan Fiala, Zhen Shao

arxiv:2105.11815 v1 · 2021-05-25 · math.NA · cs.NA · math.OC · 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{GH5JH3SWTH6HUP4OFSDWIQDN5V}

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.

Cited by

1 paper in Pith

Adaptive LSQR Preconditioning from One Small Sketch

Receipt and verification

First computed	2026-07-05T02:42:56.833189Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

31fa93ee5699fc7a3f8e2c8764406ded745ba31941d9bb904dded26d9d50a215

Aliases

arxiv: 2105.11815 · arxiv_version: 2105.11815v1 · doi: 10.48550/arxiv.2105.11815 · pith_short_12: GH5JH3SWTH6H · pith_short_16: GH5JH3SWTH6HUP4O · pith_short_8: GH5JH3SW

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/GH5JH3SWTH6HUP4OFSDWIQDN5V \
  | 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: 31fa93ee5699fc7a3f8e2c8764406ded745ba31941d9bb904dded26d9d50a215

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "95e069df03faf7be4f6118d774fedd410d4bf79b28ffd7e7efef82ee0f8ca869",
    "cross_cats_sorted": [
      "cs.NA",
      "math.OC",
      "stat.ML"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2021-05-25T10:35:13Z",
    "title_canon_sha256": "6b1419b154a40d1a0ba3bf65da3f946e76d727b833b67f2a1c595522533507ab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.11815",
    "kind": "arxiv",
    "version": 1
  }
}