Pith Number

pith:HXJ52RNK

pith:2026:HXJ52RNKZERFBTZT2OKGJRH5ED

not attested not anchored not stored refs pending

An FPT algorithm for cycle rank on semi-complete digraphs

Myounghwan Lee, O-joung Kwon, Seokbeom Kim

arxiv:2606.29336 v1 · 2026-06-28 · cs.DS · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HXJ52RNKZERFBTZT2OKGJRH5ED}

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	2026-06-30T01:18:02.015236Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3dd3dd45aac92250cf33d39464c4fd20efaa588e1c0659679003913d9931b718

Aliases

arxiv: 2606.29336 · arxiv_version: 2606.29336v1 · doi: 10.48550/arxiv.2606.29336 · pith_short_12: HXJ52RNKZERF · pith_short_16: HXJ52RNKZERFBTZT · pith_short_8: HXJ52RNK

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/HXJ52RNKZERFBTZT2OKGJRH5ED \
  | 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: 3dd3dd45aac92250cf33d39464c4fd20efaa588e1c0659679003913d9931b718

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0084dc365aa6eeb3b4960895420e87e37f7bd09d59dcee93fc5d7e9cb67a33d9",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2026-06-28T11:09:28Z",
    "title_canon_sha256": "a6a2bb88379675f9f965e5e9a8cdbd628417dd6ab9c7b262b14a2855e388b782"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.29336",
    "kind": "arxiv",
    "version": 1
  }
}