Pith Number

pith:UKOSBTHB

pith:1993:UKOSBTHBMZTJF7PKKH4FEWVEH2

not attested not anchored not stored refs pending

Deformations of cones over hyperelliptic curves

Jan Stevens

arxiv:alg-geom/9303003 v1 · 1993-03-23 · 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{UKOSBTHBMZTJF7PKKH4FEWVEH2}

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	2026-05-18T01:37:43.185929Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a29d20cce1666692fdea51f8525aa43e96770461c4a3f52a914ab1fa8a039b3c

Aliases

arxiv: alg-geom/9303003 · arxiv_version: alg-geom/9303003v1 · doi: 10.48550/arxiv.alg-geom/9303003 · pith_short_12: UKOSBTHBMZTJ · pith_short_16: UKOSBTHBMZTJF7PK · pith_short_8: UKOSBTHB

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/UKOSBTHBMZTJF7PKKH4FEWVEH2 \
  | 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: a29d20cce1666692fdea51f8525aa43e96770461c4a3f52a914ab1fa8a039b3c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "098967e623ffe751b0eb0fe1f499f06a990924cc98a439f9b69b3a1d31ff73e8",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "",
    "primary_cat": "alg-geom",
    "submitted_at": "1993-03-23T13:24:46Z",
    "title_canon_sha256": "c4ce21597f1e128041a83d02174f29ed8accfeab3b42959c273d99f1758e7f94"
  },
  "schema_version": "1.0",
  "source": {
    "id": "alg-geom/9303003",
    "kind": "arxiv",
    "version": 1
  }
}