Pith Number

pith:EM7H5UKV

pith:2012:EM7H5UKVD4FFH5CXBGVLBC5NGW

not attested not anchored not stored refs pending

Infinitely many lattice surfaces with special pseudo-Anosov maps

Kariane Calta, Thomas A. Schmidt

arxiv:1210.1293 v1 · 2012-10-04 · 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{EM7H5UKVD4FFH5CXBGVLBC5NGW}

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	2026-05-18T03:44:04.017985Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

233e7ed1551f0a53f45709aab08bad3593be4a0418bff72e2cb102b7f949345b

Aliases

arxiv: 1210.1293 · arxiv_version: 1210.1293v1 · doi: 10.48550/arxiv.1210.1293 · pith_short_12: EM7H5UKVD4FF · pith_short_16: EM7H5UKVD4FFH5CX · pith_short_8: EM7H5UKV

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/EM7H5UKVD4FFH5CXBGVLBC5NGW \
  | 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: 233e7ed1551f0a53f45709aab08bad3593be4a0418bff72e2cb102b7f949345b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "564f8571665e43fa177ee9dcfde302be906e6797acc1f9193086de737aebf5f4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2012-10-04T04:24:15Z",
    "title_canon_sha256": "f27fcc3f6c75061ed7bc8b439900082d2d5d8d80aecf241f3a73e40904885b6e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.1293",
    "kind": "arxiv",
    "version": 1
  }
}