Pith Number

pith:ND7ZPSWZ

pith:2004:ND7ZPSWZHTEJ3I57HS2LZXC5KV

not attested not anchored not stored refs pending

Multiple Saddle Connections on Flat Surfaces and Principal Boundary of the Moduli Spaces of Quadratic Differentials

Anton Zorich, Howard Masur

arxiv:math/0402197 v2 · 2004-02-12 · math.GT · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ND7ZPSWZHTEJ3I57HS2LZXC5KV}

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	2026-05-18T02:54:47.682934Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

68ff97cad93cc89da3bf3cb4bcdc5d555502f69452ac7061f0eef9c9d402d84f

Aliases

arxiv: math/0402197 · arxiv_version: math/0402197v2 · doi: 10.48550/arxiv.math/0402197 · pith_short_12: ND7ZPSWZHTEJ · pith_short_16: ND7ZPSWZHTEJ3I57 · pith_short_8: ND7ZPSWZ

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/ND7ZPSWZHTEJ3I57HS2LZXC5KV \
  | 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: 68ff97cad93cc89da3bf3cb4bcdc5d555502f69452ac7061f0eef9c9d402d84f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff37714db28b761ed02fdaca46fee403aaeb01dbd14b209483a30916ca18be97",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "",
    "primary_cat": "math.GT",
    "submitted_at": "2004-02-12T12:15:08Z",
    "title_canon_sha256": "5fef923bbcee2cef04b518092116bc24daf0a063abb3428c1f34b755cfd67263"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0402197",
    "kind": "arxiv",
    "version": 2
  }
}