Pith Number

pith:D5P4KTGK

pith:2013:D5P4KTGKMQTH5MK7VHZLZJDKSX

not attested not anchored not stored refs pending

A Fast Greedy Algorithm for Generalized Column Subset Selection

Ahmed K. Farahat, Ali Ghodsi, Mohamed S. Kamel

arxiv:1312.6820 v1 · 2013-12-24 · cs.DS · 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{D5P4KTGKMQTH5MK7VHZLZJDKSX}

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	2026-05-18T03:03:55.969550Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f5fc54cca64267eb15fa9f2bca46a95f741b1c321da1ea879c48b6800d4696f

Aliases

arxiv: 1312.6820 · arxiv_version: 1312.6820v1 · doi: 10.48550/arxiv.1312.6820 · pith_short_12: D5P4KTGKMQTH · pith_short_16: D5P4KTGKMQTH5MK7 · pith_short_8: D5P4KTGK

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/D5P4KTGKMQTH5MK7VHZLZJDKSX \
  | 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: 1f5fc54cca64267eb15fa9f2bca46a95f741b1c321da1ea879c48b6800d4696f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc9464ea5ae7c0a5cd739988e4bc4f76f9bafa6d98b88b53f7c034c2fa33e30d",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-12-24T14:19:43Z",
    "title_canon_sha256": "dcb17ac97fe4b8aaff98abdec03663689fc713f196b684c58bf6dd7124634b05"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.6820",
    "kind": "arxiv",
    "version": 1
  }
}