Pith Number

pith:4QFF5TSW

pith:2023:4QFF5TSWGFJAWM2WW6V2MIGJYV

not attested not anchored not stored refs pending

Interlacing Polynomial Method for the Column Subset Selection Problem

Jian-Feng Cai, Zhiqiang Xu, Zili Xu

arxiv:2303.07984 v2 · 2023-03-14 · cs.DS · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4QFF5TSWGFJAWM2WW6V2MIGJYV}

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	2026-07-05T07:30:47.360948Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e40a5ece5631520b3356b7aba620c9c5453388c4f93e6f9aaeb4d2c255e538cc

Aliases

arxiv: 2303.07984 · arxiv_version: 2303.07984v2 · doi: 10.48550/arxiv.2303.07984 · pith_short_12: 4QFF5TSWGFJA · pith_short_16: 4QFF5TSWGFJAWM2W · pith_short_8: 4QFF5TSW

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/4QFF5TSWGFJAWM2WW6V2MIGJYV \
  | 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: e40a5ece5631520b3356b7aba620c9c5453388c4f93e6f9aaeb4d2c255e538cc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b33ea06ee2901416ca7f1c3be9bd0919d485499333e7487028b86be0c2a61962",
    "cross_cats_sorted": [
      "math.FA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2023-03-14T15:41:05Z",
    "title_canon_sha256": "60b193f46d10b105f2ead0cf83cbff813cbf570db5bf984b02b189526aa6037a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2303.07984",
    "kind": "arxiv",
    "version": 2
  }
}