Pith Number

pith:SY4M6EWH

pith:2014:SY4M6EWHYSQNRRY63W2IDWXUAZ

not attested not anchored not stored refs pending

Birationally isotrivial fiber spaces

Christian B\"ohning, Fedor Bogomolov, Hans-Christian Graf von Bothmer

arxiv:1405.1389 v2 · 2014-05-06 · 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{SY4M6EWHYSQNRRY63W2IDWXUAZ}

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	2026-05-18T00:35:09.671279Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9638cf12c7c4a0d8c71eddb481daf4066d6ee402ae05c903622d6a9212167c7a

Aliases

arxiv: 1405.1389 · arxiv_version: 1405.1389v2 · doi: 10.48550/arxiv.1405.1389 · pith_short_12: SY4M6EWHYSQN · pith_short_16: SY4M6EWHYSQNRRY6 · pith_short_8: SY4M6EWH

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/SY4M6EWHYSQNRRY63W2IDWXUAZ \
  | 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: 9638cf12c7c4a0d8c71eddb481daf4066d6ee402ae05c903622d6a9212167c7a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "98b9769eba7081dd30995b5d3ddedac3b2df1141e32470bd07ea7bac24405500",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2014-05-06T18:23:24Z",
    "title_canon_sha256": "bd33e251d9a7c46f86efb56128356eeb5ce72a98bf762810e6069b8f0080a852"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.1389",
    "kind": "arxiv",
    "version": 2
  }
}