Pith Number

pith:QQLR5QAP

pith:1995:QQLR5QAPUZK6IEUZDVZWUE46KU

not attested not anchored not stored refs pending

Boundary behaviour of Hurwitz schemes

Torsten Ekedahl

arxiv:alg-geom/9501006 v1 · 1995-01-16 · 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{QQLR5QAPUZK6IEUZDVZWUE46KU}

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	2026-05-18T01:37:43.050978Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84171ec00fa655e412991d736a139e5520e45246cffda2384f30cc48905725af

Aliases

arxiv: alg-geom/9501006 · arxiv_version: alg-geom/9501006v1 · doi: 10.48550/arxiv.alg-geom/9501006 · pith_short_12: QQLR5QAPUZK6 · pith_short_16: QQLR5QAPUZK6IEUZ · pith_short_8: QQLR5QAP

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/QQLR5QAPUZK6IEUZDVZWUE46KU \
  | 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: 84171ec00fa655e412991d736a139e5520e45246cffda2384f30cc48905725af

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2463231a581039f4a1e804833d7d88aae672960481ce3598036ec4aed6660cc8",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "",
    "primary_cat": "alg-geom",
    "submitted_at": "1995-01-16T18:12:00Z",
    "title_canon_sha256": "8c7aaa3b4fab154b4b419423124c60750f970563070bc5d34bc87ef4e08cacb5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "alg-geom/9501006",
    "kind": "arxiv",
    "version": 1
  }
}