Pith Number

pith:7O7ETJEM

pith:2024:7O7ETJEMKOPQX5ZV4A7O2DJLKQ

not attested not anchored not stored refs pending

Optimal Oblivious Subspace Embeddings with Near-optimal Sparsity

Micha{\l} Derezi\'nski, Shabarish Chenakkod, Xiaoyu Dong

arxiv:2411.08773 v2 · 2024-11-13 · cs.DS · cs.LG · cs.NA · math.NA · math.PR · 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{7O7ETJEMKOPQX5ZV4A7O2DJLKQ}

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

Well-invertible column subsets of sparse matrices are rare

Receipt and verification

First computed	2026-07-05T10:55:25.937726Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fbbe49a48c539f0bf735e03eed0d2b54324c19091f1698616856f0d0267e8818

Aliases

arxiv: 2411.08773 · arxiv_version: 2411.08773v2 · doi: 10.48550/arxiv.2411.08773 · pith_short_12: 7O7ETJEMKOPQ · pith_short_16: 7O7ETJEMKOPQX5ZV · pith_short_8: 7O7ETJEM

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/7O7ETJEMKOPQX5ZV4A7O2DJLKQ \
  | 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: fbbe49a48c539f0bf735e03eed0d2b54324c19091f1698616856f0d0267e8818

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6da6af88cf1bbdf750b6a49b9daa8381f7c8b681a14fcdbf798e1f459848517b",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.NA",
      "math.NA",
      "math.PR",
      "stat.ML"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2024-11-13T16:58:51Z",
    "title_canon_sha256": "ed2d6f43978b5007029656f2d13ca7f4a5f4c5d815375a21dd33c9658c3bbce8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2411.08773",
    "kind": "arxiv",
    "version": 2
  }
}