Pith Number

pith:J5KKBSCV

pith:2012:J5KKBSCVSPHEH4VCSQB2QWHFFS

not attested not anchored not stored refs pending

Brauer group and birational type of moduli spaces of torsionfree sheaves on a nodal curve

Indranil Biswas, Usha N. Bhosle

arxiv:1211.1074 v1 · 2012-11-05 · 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{J5KKBSCVSPHEH4VCSQB2QWHFFS}

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	2026-05-18T03:41:28.612054Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4f54a0c85593ce43f2a29403a858e52c83b6a706c43eb70586ffe53251bf32ab

Aliases

arxiv: 1211.1074 · arxiv_version: 1211.1074v1 · doi: 10.48550/arxiv.1211.1074 · pith_short_12: J5KKBSCVSPHE · pith_short_16: J5KKBSCVSPHEH4VC · pith_short_8: J5KKBSCV

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/J5KKBSCVSPHEH4VCSQB2QWHFFS \
  | 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: 4f54a0c85593ce43f2a29403a858e52c83b6a706c43eb70586ffe53251bf32ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "db9d8fb8a2b017cb3f12d6de1c678cacd917929923f4248034b69a5528b59caf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-11-05T23:36:23Z",
    "title_canon_sha256": "7719ce3dd73ca038714574e77f86b5de0ffd5e5be0623ab21d37d0aef40edc82"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.1074",
    "kind": "arxiv",
    "version": 1
  }
}