Pith Number

pith:IFD3I5PX

pith:2016:IFD3I5PX7K2YL3Q6LEODV6FD5B

not attested not anchored not stored refs pending

Hamiltonian paths in m x n projective checkerboards

Dallan McCarthy, Dave Witte Morris

arxiv:1607.04001 v1 · 2016-07-14 · 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{IFD3I5PX7K2YL3Q6LEODV6FD5B}

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	2026-05-18T01:11:04.337175Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4147b475f7fab585ee1e591c3af8a3e87e7867bb766b568461dcc5d7e497c0bd

Aliases

arxiv: 1607.04001 · arxiv_version: 1607.04001v1 · doi: 10.48550/arxiv.1607.04001 · pith_short_12: IFD3I5PX7K2Y · pith_short_16: IFD3I5PX7K2YL3Q6 · pith_short_8: IFD3I5PX

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/IFD3I5PX7K2YL3Q6LEODV6FD5B \
  | 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: 4147b475f7fab585ee1e591c3af8a3e87e7867bb766b568461dcc5d7e497c0bd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "552ffc3635b450ea91b1fa192ce8cfab40f2a7147b2ff2a16a8ba9ed9da8c00e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2016-07-14T05:56:04Z",
    "title_canon_sha256": "1aa73c3a7e854ea78464ce7f63e293a388ce8ff1bd238fa220c9935cc65310d1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1607.04001",
    "kind": "arxiv",
    "version": 1
  }
}