Pith Number

pith:B2SUY52P

pith:2012:B2SUY52PDFOASBPDKMCKKHHOCT

not attested not anchored not stored refs pending

Polymetric brick wall patterns and two-dimensional substitutions

Michel Dekking

arxiv:1206.0152 v1 · 2012-06-01 · 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{B2SUY52PDFOASBPDKMCKKHHOCT}

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	2026-05-18T03:54:26.972444Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0ea54c774f195c0905e35304a51cee14fd8b28dfc0ef0cbe096ea04499a62fbe

Aliases

arxiv: 1206.0152 · arxiv_version: 1206.0152v1 · doi: 10.48550/arxiv.1206.0152 · pith_short_12: B2SUY52PDFOA · pith_short_16: B2SUY52PDFOASBPD · pith_short_8: B2SUY52P

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/B2SUY52PDFOASBPDKMCKKHHOCT \
  | 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: 0ea54c774f195c0905e35304a51cee14fd8b28dfc0ef0cbe096ea04499a62fbe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba123cac2f7b2e1a690e3b464253dcde38041f3ee5504d6b075768d9672b26b6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2012-06-01T11:33:51Z",
    "title_canon_sha256": "f025a0795c20552883cd3785231412639a250caab8ab5f3753b96f8e1f312809"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.0152",
    "kind": "arxiv",
    "version": 1
  }
}