Pith Number

pith:6SFSWW5T

pith:2019:6SFSWW5TTBU5Q6LIIM6QLT22BR

not attested not anchored not stored refs pending

A counterexample to prism-hamiltonicity of 3-connected planar graphs

Simon Spacapan

arxiv:1906.06683 v1 · 2019-06-16 · 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{6SFSWW5TTBU5Q6LIIM6QLT22BR}

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	2026-05-17T23:43:12.943309Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f48b2b5bb39869d87968433d05cf5a0c4dc6ec0f8f767ed0dfcece17fb493f2c

Aliases

arxiv: 1906.06683 · arxiv_version: 1906.06683v1 · doi: 10.48550/arxiv.1906.06683 · pith_short_12: 6SFSWW5TTBU5 · pith_short_16: 6SFSWW5TTBU5Q6LI · pith_short_8: 6SFSWW5T

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/6SFSWW5TTBU5Q6LIIM6QLT22BR \
  | 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: f48b2b5bb39869d87968433d05cf5a0c4dc6ec0f8f767ed0dfcece17fb493f2c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd90cf7f2366e6ebb416edaf458920be09a6f0eeb34d814c8af08df2c1dabe6c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-06-16T13:30:51Z",
    "title_canon_sha256": "045b7296510ccbe64ab3ac123e95e9ca8100e7b006a6b4a54ac1a1399280841f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.06683",
    "kind": "arxiv",
    "version": 1
  }
}