Pith Number

pith:WYLWVHE7

pith:1993:WYLWVHE72OHCEMENFYCDZ6GTF7

not attested not anchored not stored refs pending

What can be computed in algebraic geometry?

Dave Bayer, David Mumford

arxiv:alg-geom/9304003 v1 · 1993-04-11 · 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{WYLWVHE72OHCEMENFYCDZ6GTF7}

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	2026-05-18T01:37:43.178542Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6176a9c9fd38e22308d2e043cf8d32ff24cff072fa71af345e39ecbb1fa7332

Aliases

arxiv: alg-geom/9304003 · arxiv_version: alg-geom/9304003v1 · doi: 10.48550/arxiv.alg-geom/9304003 · pith_short_12: WYLWVHE72OHC · pith_short_16: WYLWVHE72OHCEMEN · pith_short_8: WYLWVHE7

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/WYLWVHE72OHCEMENFYCDZ6GTF7 \
  | 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: b6176a9c9fd38e22308d2e043cf8d32ff24cff072fa71af345e39ecbb1fa7332

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "123f7af9cd9e2f93340956284c052a4c011c3c9d5d19adb333805f26212edae8",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "",
    "primary_cat": "alg-geom",
    "submitted_at": "1993-04-11T19:42:23Z",
    "title_canon_sha256": "658eaafb65c2624f26c56008c3eeb7ab17e68e9f2db842d42362e3a1c1d31a45"
  },
  "schema_version": "1.0",
  "source": {
    "id": "alg-geom/9304003",
    "kind": "arxiv",
    "version": 1
  }
}