Pith Number

pith:2BAH5SDM

pith:2013:2BAH5SDMQC54DHXOS5CSYZGEMW

not attested not anchored not stored refs pending

A Torelli type problem for logarithmic bundles over projective varieties

Edoardo Ballico, Francesco Malaspina, Sukmoon Huh

arxiv:1309.7192 v2 · 2013-09-27 · 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{2BAH5SDMQC54DHXOS5CSYZGEMW}

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	2026-05-18T03:05:18.023460Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d0407ec86c80bbc19eee97452c64c465822d18f51a318df6784419b04760c01a

Aliases

arxiv: 1309.7192 · arxiv_version: 1309.7192v2 · doi: 10.48550/arxiv.1309.7192 · pith_short_12: 2BAH5SDMQC54 · pith_short_16: 2BAH5SDMQC54DHXO · pith_short_8: 2BAH5SDM

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/2BAH5SDMQC54DHXOS5CSYZGEMW \
  | 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: d0407ec86c80bbc19eee97452c64c465822d18f51a318df6784419b04760c01a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b1a0c3a196c531364b46de37b4a66690a70e6267df5e4208a2780539749cea8c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2013-09-27T10:16:15Z",
    "title_canon_sha256": "a47c54b424344d3b63b81bc176fb8520c7c4d025a497ceb00df969131327187c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.7192",
    "kind": "arxiv",
    "version": 2
  }
}