Pith Number

pith:BYDIVIVA

pith:2013:BYDIVIVA3WGA4PM2LPMFM5WGFB

not attested not anchored not stored refs pending

Tonoli's Calabi--Yau threefolds revisited

Grzegorz Kapustka, Michal Kapustka

arxiv:1310.0774 v5 · 2013-10-02 · 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{BYDIVIVA3WGA4PM2LPMFM5WGFB}

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	2026-05-18T02:00:02.784892Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0e068aa2a0dd8c0e3d9a5bd85676c6284bc8f66a9244733cc1fec393ffdc9691

Aliases

arxiv: 1310.0774 · arxiv_version: 1310.0774v5 · doi: 10.48550/arxiv.1310.0774 · pith_short_12: BYDIVIVA3WGA · pith_short_16: BYDIVIVA3WGA4PM2 · pith_short_8: BYDIVIVA

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/BYDIVIVA3WGA4PM2LPMFM5WGFB \
  | 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: 0e068aa2a0dd8c0e3d9a5bd85676c6284bc8f66a9244733cc1fec393ffdc9691

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "306e6a49c7501ffb3cfd2ac8d5ab2cbba0a8c3823215d4c508737425fb2d1c94",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2013-10-02T17:18:47Z",
    "title_canon_sha256": "43d28bf16ab1459096b595eb0487f7838d44034318370aabfdae8e8e8a9e393c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.0774",
    "kind": "arxiv",
    "version": 5
  }
}