Pith Number

pith:NVMJYMFS

pith:2008:NVMJYMFSU6B2XUFMKP3GWOAHTM

not attested not anchored not stored refs pending

Structure of spanning trees on the two-dimensional Sierpinski gasket

Lung-Chi Chen, Shu-Chiuan Chang

arxiv:0806.0721 v1 · 2008-06-04 · 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{NVMJYMFSU6B2XUFMKP3GWOAHTM}

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	2026-05-18T03:05:07.955490Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d589c30b2a783abd0ac53f66b38079b31e17e7bdffc6f727bd77667411a7314

Aliases

arxiv: 0806.0721 · arxiv_version: 0806.0721v1 · doi: 10.48550/arxiv.0806.0721 · pith_short_12: NVMJYMFSU6B2 · pith_short_16: NVMJYMFSU6B2XUFM · pith_short_8: NVMJYMFS

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/NVMJYMFSU6B2XUFMKP3GWOAHTM \
  | 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: 6d589c30b2a783abd0ac53f66b38079b31e17e7bdffc6f727bd77667411a7314

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f5188fb1320396ccc8ee3788056c9c6aea7ced138feec818c59c2f744d592510",
    "cross_cats_sorted": [
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2008-06-04T09:09:42Z",
    "title_canon_sha256": "c960c1eeca518a15d442f09bb75a928fc004fe0c3698b6115e320447528c096b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0806.0721",
    "kind": "arxiv",
    "version": 1
  }
}