Pith Number

pith:DWQELHU2

pith:1996:DWQELHU23VFXURZ6HXAAUNMISC

not attested not anchored not stored refs pending

The Singly Periodic Genus-One Helicoid

David Hoffman, Fusheng Wei, Hermann Karcher

arxiv:math/9605222 v1 · 1996-05-17 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DWQELHU23VFXURZ6HXAAUNMISC}

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	2026-05-18T01:05:47.421532Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1da0459e9add4b7a473e3dc00a358890871d53f93f5562f67aec29c2608c3f6d

Aliases

arxiv: math/9605222 · arxiv_version: math/9605222v1 · doi: 10.48550/arxiv.math/9605222 · pith_short_12: DWQELHU23VFX · pith_short_16: DWQELHU23VFXURZ6 · pith_short_8: DWQELHU2

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/DWQELHU23VFXURZ6HXAAUNMISC \
  | 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: 1da0459e9add4b7a473e3dc00a358890871d53f93f5562f67aec29c2608c3f6d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b1f93127ba0ad7e6df4393ea4374a78bcb5465edfd6fe682f3ae1dc15095dfac",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.DG",
    "submitted_at": "1996-05-17T00:00:00Z",
    "title_canon_sha256": "6a8c3b56ca92ee244727effe58f5a60f75acc1df7abc026cb1101e50d8d9c0ab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9605222",
    "kind": "arxiv",
    "version": 1
  }
}