Pith Number

pith:3YAIL2RU

pith:2010:3YAIL2RUY4VQEETKEQ4USBASOL

not attested not anchored not stored refs pending

Approximate Self-Assembly of the Sierpinski Triangle

Brad Shutters, Jack H. Lutz

arxiv:1001.2888 v1 · 2010-01-18 · cs.CC · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3YAIL2RUY4VQEETKEQ4USBASOL}

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	2026-05-18T02:09:43.406039Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de0085ea34c72b02126a243949041272e5a6e5ce757d9939c7c74e4253f4a79f

Aliases

arxiv: 1001.2888 · arxiv_version: 1001.2888v1 · doi: 10.48550/arxiv.1001.2888 · pith_short_12: 3YAIL2RUY4VQ · pith_short_16: 3YAIL2RUY4VQEETK · pith_short_8: 3YAIL2RU

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/3YAIL2RUY4VQEETKEQ4USBASOL \
  | 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: de0085ea34c72b02126a243949041272e5a6e5ce757d9939c7c74e4253f4a79f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8fe9be871634e3b5c7c76edaedc09fa9f1e30a9ddf8fa5baba981dc1df6c827e",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2010-01-18T08:41:11Z",
    "title_canon_sha256": "551d29310623035c006565ce29150ab5e8e6492e61967f7d8ed7936d3d0c649b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.2888",
    "kind": "arxiv",
    "version": 1
  }
}