Pith Number

pith:ZPO6ZWDI

pith:2009:ZPO6ZWDIG3ZEJUNZCMU46YB6L7

not attested not anchored not stored refs pending

Edge-disjoint Hamilton cycles in graphs

Daniela K\"uhn, Demetres Christofides, Deryk Osthus

arxiv:0908.4572 v2 · 2009-08-31 · 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{ZPO6ZWDIG3ZEJUNZCMU46YB6L7}

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	2026-05-18T02:24:47.481367Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cbddecd86836f244d1b91329cf603e5fd1e48d6b56ca1e738881b00b92d45622

Aliases

arxiv: 0908.4572 · arxiv_version: 0908.4572v2 · doi: 10.48550/arxiv.0908.4572 · pith_short_12: ZPO6ZWDIG3ZE · pith_short_16: ZPO6ZWDIG3ZEJUNZ · pith_short_8: ZPO6ZWDI

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/ZPO6ZWDIG3ZEJUNZCMU46YB6L7 \
  | 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: cbddecd86836f244d1b91329cf603e5fd1e48d6b56ca1e738881b00b92d45622

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4ab0d0d590289188973c07faa06aa55e5df79542fdf09d112433449453ecb588",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2009-08-31T16:21:29Z",
    "title_canon_sha256": "01b80d63b4c2bfd12b705fea97a5fd91c9318583d56830ab25351849aca4ed17"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.4572",
    "kind": "arxiv",
    "version": 2
  }
}