Pith Number

pith:QF4B2KFI

pith:2018:QF4B2KFIMJST3JYCMGV5CNWXQB

not attested not anchored not stored refs pending

Birational geometry for d-critical loci and wall-crossing in Calabi-Yau 3-folds

Yukinobu Toda

arxiv:1805.00182 v2 · 2018-05-01 · 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{QF4B2KFIMJST3JYCMGV5CNWXQB}

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	2026-05-17T23:54:16.536573Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81781d28a862653da70261abd136d7804a07355836f41bb6f7f95d4ba40f6feb

Aliases

arxiv: 1805.00182 · arxiv_version: 1805.00182v2 · doi: 10.48550/arxiv.1805.00182 · pith_short_12: QF4B2KFIMJST · pith_short_16: QF4B2KFIMJST3JYC · pith_short_8: QF4B2KFI

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/QF4B2KFIMJST3JYCMGV5CNWXQB \
  | 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: 81781d28a862653da70261abd136d7804a07355836f41bb6f7f95d4ba40f6feb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c696975477d634b958af6ab0ec186728b831f44b4486b8d4cf9643133a87c0ee",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-05-01T04:28:15Z",
    "title_canon_sha256": "97c2b6da68a4a06a0ec1a6990a3963e216175ac500b2b206aef657cf532b0c2f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.00182",
    "kind": "arxiv",
    "version": 2
  }
}