Pith Number

pith:XCP77E2T

pith:2019:XCP77E2TRGZTECLMRPUWATAPLP

not attested not anchored not stored refs pending

Obtaining binary perfect codes out of tilings

Gabriella Akemi Miyamoto, Marcelo Firer

arxiv:1904.10789 v2 · 2019-04-23 · cs.IT · math.CO · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XCP77E2TRGZTECLMRPUWATAPLP}

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	2026-05-17T23:45:44.063194Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b89fff935389b332096c8be9604c0f5be87f5e156175659936061b0c10652876

Aliases

arxiv: 1904.10789 · arxiv_version: 1904.10789v2 · doi: 10.48550/arxiv.1904.10789 · pith_short_12: XCP77E2TRGZT · pith_short_16: XCP77E2TRGZTECLM · pith_short_8: XCP77E2T

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/XCP77E2TRGZTECLMRPUWATAPLP \
  | 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: b89fff935389b332096c8be9604c0f5be87f5e156175659936061b0c10652876

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6e4f5c453ebe7d2435ece685ee3555f56e0f5355357a1a0f65668bab038a73e0",
    "cross_cats_sorted": [
      "math.CO",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2019-04-23T12:15:41Z",
    "title_canon_sha256": "6402d1aca63edc15b2498bef424dcea9507a22e0112916e80f4ac489adaa7c59"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.10789",
    "kind": "arxiv",
    "version": 2
  }
}