Pith Number

pith:DH3VMZFO

pith:2018:DH3VMZFOUXAU6K4S3YHU3AQUUX

not attested not anchored not stored refs pending

MBM loci in families of hyperkahler manifolds and centers of birational contractions

Ekaterina Amerik, Misha Verbitsky

arxiv:1804.00463 v2 · 2018-04-02 · 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{DH3VMZFOUXAU6K4S3YHU3AQUUX}

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	2026-05-17T23:51:09.747299Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

19f75664aea5c14f2b92de0f4d8214a5cc880f4f47d0f8557371c3366fdfaf19

Aliases

arxiv: 1804.00463 · arxiv_version: 1804.00463v2 · doi: 10.48550/arxiv.1804.00463 · pith_short_12: DH3VMZFOUXAU · pith_short_16: DH3VMZFOUXAU6K4S · pith_short_8: DH3VMZFO

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/DH3VMZFOUXAU6K4S3YHU3AQUUX \
  | 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: 19f75664aea5c14f2b92de0f4d8214a5cc880f4f47d0f8557371c3366fdfaf19

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7e0a3ab96b645181c7614014b2e2ca2d20eb86ee1c92684bb3b553a4bc632b42",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-04-02T11:56:24Z",
    "title_canon_sha256": "1734dc46f58216e941b0e9896ace05035bd24118ea60bc3a2659fb465241c910"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.00463",
    "kind": "arxiv",
    "version": 2
  }
}