Pith Number

pith:E4FA2AEU

pith:2019:E4FA2AEUYJGG4QKXY3RHPYF3CJ

not attested not anchored not stored refs pending

Set Cover in Sub-linear Time

Ali Vakilian, Anak Yodpinyanee, Piotr Indyk, Ronitt Rubinfeld, Sepideh Mahabadi

arxiv:1902.03534 v1 · 2019-02-10 · cs.DS · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{E4FA2AEUYJGG4QKXY3RHPYF3CJ}

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	2026-05-17T23:54:20.513871Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

270a0d0094c24c6e4157c6e277e0bb1253e1e7c2defd42b0ba89f800d3ac0cc1

Aliases

arxiv: 1902.03534 · arxiv_version: 1902.03534v1 · doi: 10.48550/arxiv.1902.03534 · pith_short_12: E4FA2AEUYJGG · pith_short_16: E4FA2AEUYJGG4QKX · pith_short_8: E4FA2AEU

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/E4FA2AEUYJGG4QKXY3RHPYF3CJ \
  | 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: 270a0d0094c24c6e4157c6e277e0bb1253e1e7c2defd42b0ba89f800d3ac0cc1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0dcdc573ad9ac0cac2efb3c765e18e60da65a41805a4169a4b4b00ca57760aed",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2019-02-10T04:10:34Z",
    "title_canon_sha256": "1ad5d0dcd41624b023d4b269d38f56d534e81db40aa0c1a403767632257c0925"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.03534",
    "kind": "arxiv",
    "version": 1
  }
}