Pith Number

pith:7FRLLAMS

pith:2011:7FRLLAMSBVM2IDLK7HDQTWF5GA

not attested not anchored not stored refs pending

A remark on a question of Beauville about lagrangian fibrations

Ekaterina Amerik

arxiv:1110.2852 v2 · 2011-10-13 · 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{7FRLLAMSBVM2IDLK7HDQTWF5GA}

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	2026-05-18T03:57:24.825659Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f962b581920d59a40d6af9c709d8bd3036da6598da37ba07f0e14bebb20ae5e9

Aliases

arxiv: 1110.2852 · arxiv_version: 1110.2852v2 · doi: 10.48550/arxiv.1110.2852 · pith_short_12: 7FRLLAMSBVM2 · pith_short_16: 7FRLLAMSBVM2IDLK · pith_short_8: 7FRLLAMS

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/7FRLLAMSBVM2IDLK7HDQTWF5GA \
  | 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: f962b581920d59a40d6af9c709d8bd3036da6598da37ba07f0e14bebb20ae5e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91f250822b95623e6f8bd0eef365d8565cc56c07654a20b4f19b421188f5a6c7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2011-10-13T07:23:46Z",
    "title_canon_sha256": "0346497a949d0a0cef4949f2440c192c4fc68c3e33614a58274dc97ad76feff7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.2852",
    "kind": "arxiv",
    "version": 2
  }
}