Pith Number

pith:6ATA2EXT

pith:2009:6ATA2EXTWQOCF2XRIY6YXDGD2F

not attested not anchored not stored refs pending

The Hausdorff dimension of the projections of self-affine carpets

Andrew Ferguson, Pablo Shmerkin, Thomas Jordan

arxiv:0903.2216 v3 · 2009-03-12 · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6ATA2EXTWQOCF2XRIY6YXDGD2F}

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	2026-05-18T03:30:26.325176Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f0260d12f3b41c22eaf1463d8b8cc3d153b19b7b02b76cc775e3abaa8631f8fd

Aliases

arxiv: 0903.2216 · arxiv_version: 0903.2216v3 · doi: 10.48550/arxiv.0903.2216 · pith_short_12: 6ATA2EXTWQOC · pith_short_16: 6ATA2EXTWQOCF2XR · pith_short_8: 6ATA2EXT

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/6ATA2EXTWQOCF2XRIY6YXDGD2F \
  | 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: f0260d12f3b41c22eaf1463d8b8cc3d153b19b7b02b76cc775e3abaa8631f8fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "afc903240cdf3370666587bf1ceddf13197e6bc3ef8a438c9f20dbeb6e9587e0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2009-03-12T17:08:43Z",
    "title_canon_sha256": "390fe8ed40e9e6ee9874ecf35cfc4cf6c0f83ccfb357776ca77325529f1a7d7e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.2216",
    "kind": "arxiv",
    "version": 3
  }
}