Pith Number

pith:WUEYU77H

pith:2015:WUEYU77HR7CKDYRYGPVP4W4DPY

not attested not anchored not stored refs pending

Tiling Problem: Convex Pentagons for Edge-to-Edge Monohedral Tiling and Convex Polygons for Aperiodic Tiling

Teruhisa Sugimoto

arxiv:1508.01864 v4 · 2015-08-08 · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WUEYU77HR7CKDYRYGPVP4W4DPY}

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	2026-05-18T00:40:41.753177Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b5098a7fe78fc4a1e23833eafe5b837e26fdbcb8d43000202dedac994aedf83b

Aliases

arxiv: 1508.01864 · arxiv_version: 1508.01864v4 · doi: 10.48550/arxiv.1508.01864 · pith_short_12: WUEYU77HR7CK · pith_short_16: WUEYU77HR7CKDYRY · pith_short_8: WUEYU77H

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/WUEYU77HR7CKDYRYGPVP4W4DPY \
  | 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: b5098a7fe78fc4a1e23833eafe5b837e26fdbcb8d43000202dedac994aedf83b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f5c220d6a7bb77f2a14abef455a8879d48ca0062ee6fcbb884d16bb9d7086226",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2015-08-08T07:32:18Z",
    "title_canon_sha256": "d256aba9e16b7e012e4723e459a2cb02876df328b4db626d723056b6d7619ccb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.01864",
    "kind": "arxiv",
    "version": 4
  }
}