Pith Number

pith:JWGGRSH2

pith:2008:JWGGRSH2K6WG24DAXA7JRXBHWI

not attested not anchored not stored refs pending

Dimers on graphs in non-orientable surfaces

David Cimasoni

arxiv:0804.4772 v3 · 2008-04-30 · math-ph · math.GT · 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{JWGGRSH2K6WG24DAXA7JRXBHWI}

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	2026-05-18T03:49:12.311039Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4d8c68c8fa57ac6d7060b83e98dc27b23f1c7b3aff8b8902fd51ed7ee0d35224

Aliases

arxiv: 0804.4772 · arxiv_version: 0804.4772v3 · doi: 10.48550/arxiv.0804.4772 · pith_short_12: JWGGRSH2K6WG · pith_short_16: JWGGRSH2K6WG24DA · pith_short_8: JWGGRSH2

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/JWGGRSH2K6WG24DAXA7JRXBHWI \
  | 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: 4d8c68c8fa57ac6d7060b83e98dc27b23f1c7b3aff8b8902fd51ed7ee0d35224

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "72faec2b3cdacbc23270c7e098e8e45e4eafa77cabb4b6bc2067ad24834cb4d3",
    "cross_cats_sorted": [
      "math.GT",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2008-04-30T09:34:19Z",
    "title_canon_sha256": "60c9e3750d1c43400a267a9a9031fad2ebc5e7f394a94bbf63b44f1cb89618eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.4772",
    "kind": "arxiv",
    "version": 3
  }
}