Pith Number

pith:4WUDF3EQ

pith:2018:4WUDF3EQQNKCAKBY634XHTVQWJ

not attested not anchored not stored refs pending

A square root of Hurwitz numbers

Junho Lee

arxiv:1807.03631 v2 · 2018-07-07 · math.AG · math.SG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4WUDF3EQQNKCAKBY634XHTVQWJ}

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	2026-05-17T23:42:48.914035Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5a832ec908354202838f6f973ceb0b27c5ce8edb60eba5686328f2ac0acfb00

Aliases

arxiv: 1807.03631 · arxiv_version: 1807.03631v2 · doi: 10.48550/arxiv.1807.03631 · pith_short_12: 4WUDF3EQQNKC · pith_short_16: 4WUDF3EQQNKCAKBY · pith_short_8: 4WUDF3EQ

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/4WUDF3EQQNKCAKBY634XHTVQWJ \
  | 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: e5a832ec908354202838f6f973ceb0b27c5ce8edb60eba5686328f2ac0acfb00

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "358cc68288d830bc14683be1eb0b8897455df7c3134ef4c4e185be73f60ff16d",
    "cross_cats_sorted": [
      "math.SG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-07-07T20:57:08Z",
    "title_canon_sha256": "40814c6f58cce0ecb1d93cb90e65dcd7ff61489e532c97272efa6f129fbf5a4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.03631",
    "kind": "arxiv",
    "version": 2
  }
}