Pith Number

pith:XEWUIHXP

pith:2010:XEWUIHXPJI4Q6BNTT342KHS7AY

not attested not anchored not stored refs pending

Acyclic orientations on the Sierpinski gasket

Shu-Chiuan Chang

arxiv:1005.3627 v1 · 2010-05-20 · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XEWUIHXPJI4Q6BNTT342KHS7AY}

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	2026-05-18T02:07:16.499183Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b92d441eef4a390f05b39ef9a51e5f060fcc56cd2ccdd6f98a64282d19d8b403

Aliases

arxiv: 1005.3627 · arxiv_version: 1005.3627v1 · doi: 10.48550/arxiv.1005.3627 · pith_short_12: XEWUIHXPJI4Q · pith_short_16: XEWUIHXPJI4Q6BNT · pith_short_8: XEWUIHXP

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/XEWUIHXPJI4Q6BNTT342KHS7AY \
  | 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: b92d441eef4a390f05b39ef9a51e5f060fcc56cd2ccdd6f98a64282d19d8b403

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "baf0418cbe23c590024741382efc9d7c2f8b4d65709e003d8a21104f407d4094",
    "cross_cats_sorted": [
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2010-05-20T08:30:34Z",
    "title_canon_sha256": "ac6b640f7286c3480e90df407b9ceb5f1db8a750a0c8956837807b58c3bf9b2f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.3627",
    "kind": "arxiv",
    "version": 1
  }
}