Pith Number

pith:H3WVLFZO

pith:1995:H3WVLFZOIKOF7I2ORZBYBYIMMD

not attested not anchored not stored refs pending

Geometry of plane curves via Tschirnhausen resolution tower

Mutsuo Oka, Norbert A'Campo

arxiv:alg-geom/9508007 v2 · 1995-08-16 · alg-geom · 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{H3WVLFZOIKOF7I2ORZBYBYIMMD}

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	2026-05-18T01:37:42.916245Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3eed55972e429c5fa34e8e4380e10c60d3841f6db845f2b60154129a708df971

Aliases

arxiv: alg-geom/9508007 · arxiv_version: alg-geom/9508007v2 · doi: 10.48550/arxiv.alg-geom/9508007 · pith_short_12: H3WVLFZOIKOF · pith_short_16: H3WVLFZOIKOF7I2O · pith_short_8: H3WVLFZO

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/H3WVLFZOIKOF7I2ORZBYBYIMMD \
  | 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: 3eed55972e429c5fa34e8e4380e10c60d3841f6db845f2b60154129a708df971

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "09ef663143b82c6c8e59a7f3d670a367c2e9d071aeedba3d7617e7764895030f",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "",
    "primary_cat": "alg-geom",
    "submitted_at": "1995-08-16T06:03:59Z",
    "title_canon_sha256": "17b05ce8abf7a6c61f57551acdc57d7de2f568d6fa855cf3e4e411bca919fcd4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "alg-geom/9508007",
    "kind": "arxiv",
    "version": 2
  }
}