Pith Number

pith:MK4OGY7H

pith:2022:MK4OGY7HDLDISIG5HBLLYKHLMY

not attested not anchored not stored refs pending

Exact Exponential Algorithms for Clustering Problems

Fedor V. Fomin, Nidhi Purohit, Petr A. Golovach, Saket Saurabh, Tanmay Inamdar

arxiv:2208.06847 v1 · 2022-08-14 · 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{MK4OGY7HDLDISIG5HBLLYKHLMY}

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	2026-07-05T04:48:21.427927Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

62b8e363e71ac68920dd3856bc28eb660d9c34b2c134d63c08a1dcab7bbc5e7b

Aliases

arxiv: 2208.06847 · arxiv_version: 2208.06847v1 · doi: 10.48550/arxiv.2208.06847 · pith_short_12: MK4OGY7HDLDI · pith_short_16: MK4OGY7HDLDISIG5 · pith_short_8: MK4OGY7H

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/MK4OGY7HDLDISIG5HBLLYKHLMY \
  | 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: 62b8e363e71ac68920dd3856bc28eb660d9c34b2c134d63c08a1dcab7bbc5e7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b3ea6cf3732169eafb2ee200a811e37c807a7cf52888072cf5258fdc240d8b70",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2022-08-14T13:04:00Z",
    "title_canon_sha256": "2a7d17d2f0fd10c018083b5f2e0a79e643bd96f15f041e0b63801e085e8e95d4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2208.06847",
    "kind": "arxiv",
    "version": 1
  }
}