Pith Number

pith:H4TBK22O

pith:2016:H4TBK22OGZFK2SXIHOLP5H57RB

not attested not anchored not stored refs pending

The Pegasus Tiles: an aperiodic pair of tiles

Chaim Goodman-Strauss

arxiv:1608.07166 v1 · 2016-08-25 · 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{H4TBK22OGZFK2SXIHOLP5H57RB}

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	2026-05-18T01:07:54.662265Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f26156b4e364aad4ae83b96fe9fbf88754b3882501036313bfd75fdfc21d150

Aliases

arxiv: 1608.07166 · arxiv_version: 1608.07166v1 · doi: 10.48550/arxiv.1608.07166 · pith_short_12: H4TBK22OGZFK · pith_short_16: H4TBK22OGZFK2SXI · pith_short_8: H4TBK22O

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/H4TBK22OGZFK2SXIHOLP5H57RB \
  | 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: 3f26156b4e364aad4ae83b96fe9fbf88754b3882501036313bfd75fdfc21d150

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9504b2b92a5af37f6eb7bdcc10211fedc1b4cf5f2a62c62b0bbd588079bfdfc0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2016-08-25T14:24:38Z",
    "title_canon_sha256": "fdd44146c1ec5bd93e166f7752af6c2c5e1efca207b6ac080f8b0b7e8327571a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.07166",
    "kind": "arxiv",
    "version": 1
  }
}