Pith Number

pith:U7IPHJPM

pith:2013:U7IPHJPMGDEY35PM643EV6OUNN

not attested not anchored not stored refs pending

Calabi--Yau threefolds in $\mathbb{P}^6$

Grzegorz Kapustka, Michal Kapustka

arxiv:1306.5628 v3 · 2013-06-24 · 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{U7IPHJPMGDEY35PM643EV6OUNN}

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	2026-05-18T01:49:56.186992Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7d0f3a5ec30c98df5ecf7364af9d46b6b9c25cd4c9e9e93b46c41fd2e1f8ac0

Aliases

arxiv: 1306.5628 · arxiv_version: 1306.5628v3 · doi: 10.48550/arxiv.1306.5628 · pith_short_12: U7IPHJPMGDEY · pith_short_16: U7IPHJPMGDEY35PM · pith_short_8: U7IPHJPM

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/U7IPHJPMGDEY35PM643EV6OUNN \
  | 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: a7d0f3a5ec30c98df5ecf7364af9d46b6b9c25cd4c9e9e93b46c41fd2e1f8ac0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c04d21dc563cef215f79ea8150626efa7229af833d494bc694f583cb46e9670",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2013-06-24T13:43:07Z",
    "title_canon_sha256": "d8dd7b44ddba9396b629b59bdf33f9045ab521645ec22351c67483e59aff9ef9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.5628",
    "kind": "arxiv",
    "version": 3
  }
}