Pith Number

pith:YH3FGYQM

pith:2026:YH3FGYQMT2N4QZJI2GGUKJXMYY

not attested not anchored not stored refs pending

NP-Hardness of Non-Crossing Hamiltonian Path and Cycle in Non-Planar Graphs

Jack Snoeyink, Randal Tuggle

arxiv:2608.06255 v1 · 2026-08-06 · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YH3FGYQMT2N4QZJI2GGUKJXMYY}

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	2026-08-07T01:41:04.042053Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c1f653620c9e9bc86528d18d4526ecc60ff4ca2032bb9e8d2f9a2b243212b39c

Aliases

arxiv: 2608.06255 · arxiv_version: 2608.06255v1 · doi: 10.48550/arxiv.2608.06255 · pith_short_12: YH3FGYQMT2N4 · pith_short_16: YH3FGYQMT2N4QZJI · pith_short_8: YH3FGYQM

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/YH3FGYQMT2N4QZJI2GGUKJXMYY \
  | 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: c1f653620c9e9bc86528d18d4526ecc60ff4ca2032bb9e8d2f9a2b243212b39c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a28cb7783d0c0fc756f6bfc5a3524b86094921166f48a1895576fd46c710d6ac",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2026-08-06T16:44:37Z",
    "title_canon_sha256": "1297133904770e8c4cc62fcbc5b384d36ffa41e5b3fdb976eec4c0949ee35157"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2608.06255",
    "kind": "arxiv",
    "version": 1
  }
}