Pith Number

pith:KKDT7Y6W

pith:2019:KKDT7Y6W2Y242B2MVXWAMZ6HW6

not attested not anchored not stored refs pending

An Ore-type condition for existence of two disjoint cycles

Jianguo Qian, Maoqun Wang

arxiv:1905.00239 v1 · 2019-05-01 · 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{KKDT7Y6W2Y242B2MVXWAMZ6HW6}

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	2026-05-17T23:47:13.375108Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

52873fe3d6d635cd074cadec0667c7b79088f969846a4348c335abc6a46d72d9

Aliases

arxiv: 1905.00239 · arxiv_version: 1905.00239v1 · doi: 10.48550/arxiv.1905.00239 · pith_short_12: KKDT7Y6W2Y24 · pith_short_16: KKDT7Y6W2Y242B2M · pith_short_8: KKDT7Y6W

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/KKDT7Y6W2Y242B2MVXWAMZ6HW6 \
  | 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: 52873fe3d6d635cd074cadec0667c7b79088f969846a4348c335abc6a46d72d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "84e0b10e1d7473e8f4b3a8000ddc1c1efd6642c13481952ff178e3b0a0a277ff",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-05-01T09:52:56Z",
    "title_canon_sha256": "4321c102f47faed440529cfd258d4f100fb272458166b40d361d65f5b1b2af4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.00239",
    "kind": "arxiv",
    "version": 1
  }
}