Pith Number

pith:EDJVHJJ2

pith:2018:EDJVHJJ2AIFAKRTL5372G7SJV7

not attested not anchored not stored refs pending

On the number of vertex-disjoint cycles in digraphs

Yandong Bai, Yannis Manoussakis

arxiv:1805.02999 v2 · 2018-05-08 · 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{EDJVHJJ2AIFAKRTL5372G7SJV7}

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	2026-05-18T00:14:39.962911Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20d353a53a020a05466beeffa37e49afca94360e550c5821c0318a70741a56e7

Aliases

arxiv: 1805.02999 · arxiv_version: 1805.02999v2 · doi: 10.48550/arxiv.1805.02999 · pith_short_12: EDJVHJJ2AIFA · pith_short_16: EDJVHJJ2AIFAKRTL · pith_short_8: EDJVHJJ2

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/EDJVHJJ2AIFAKRTL5372G7SJV7 \
  | 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: 20d353a53a020a05466beeffa37e49afca94360e550c5821c0318a70741a56e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "009d86c3ff05e0cd4694eedccfdd08e49542e7e7a4d2878af823c71899bec9d5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-05-08T13:24:29Z",
    "title_canon_sha256": "1b72cfca47f945c432fe85af2c5c2d129f05d1ecc7f5e83bc70ee70a8867cb4a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.02999",
    "kind": "arxiv",
    "version": 2
  }
}