Pith Number

pith:OCK2C3SK

pith:2013:OCK2C3SKQDP7YO7CMHKF6SXMZO

not attested not anchored not stored refs pending

Approximating the MaxCover Problem with Bounded Frequencies in FPT Time

Piotr Faliszewski, Piotr Skowron

arxiv:1309.4405 v1 · 2013-09-17 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OCK2C3SKQDP7YO7CMHKF6SXMZO}

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	2026-05-18T03:13:08.812432Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7095a16e4a80dffc3be261d45f4aeccba32908c1c4da9914aa4d5762370650a2

Aliases

arxiv: 1309.4405 · arxiv_version: 1309.4405v1 · doi: 10.48550/arxiv.1309.4405 · pith_short_12: OCK2C3SKQDP7 · pith_short_16: OCK2C3SKQDP7YO7C · pith_short_8: OCK2C3SK

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/OCK2C3SKQDP7YO7CMHKF6SXMZO \
  | 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: 7095a16e4a80dffc3be261d45f4aeccba32908c1c4da9914aa4d5762370650a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e64bb8977231ea2fbeb85afb4cfb8d1e71e654456305bc6d3ab8ed6c03dab981",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-09-17T17:51:08Z",
    "title_canon_sha256": "a5c04e989c1a4542f490b575fe99b2eb9f82c80eb04e575f22de1f5a10b64fe6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.4405",
    "kind": "arxiv",
    "version": 1
  }
}