Pith Number

pith:M2RYKH7S

pith:2019:M2RYKH7S3PKZZEIW4KE7GA3HDB

not attested not anchored not stored refs pending

Generalized orbifold Euler characteristics on the Grothendieck ring of varieties with actions of finite groups

A. Melle-Hern\'andez, I. Luengo, S. M. Gusein-Zade

arxiv:1906.01920 v1 · 2019-06-05 · 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{M2RYKH7S3PKZZEIW4KE7GA3HDB}

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	2026-05-17T23:44:05.749100Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

66a3851ff2dbd59c9116e289f303671865bbe9a7c51f14ec17e625ce64879d20

Aliases

arxiv: 1906.01920 · arxiv_version: 1906.01920v1 · doi: 10.48550/arxiv.1906.01920 · pith_short_12: M2RYKH7S3PKZ · pith_short_16: M2RYKH7S3PKZZEIW · pith_short_8: M2RYKH7S

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/M2RYKH7S3PKZZEIW4KE7GA3HDB \
  | 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: 66a3851ff2dbd59c9116e289f303671865bbe9a7c51f14ec17e625ce64879d20

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2478a4d44f6ed87be9169475865aa828ffc7c358c28ae2b09f2d7902c7ce30f8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-06-05T10:20:33Z",
    "title_canon_sha256": "cab1a696f4d807d8151471aed27f5e5e4273dd498dd2044062350980e595ed49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.01920",
    "kind": "arxiv",
    "version": 1
  }
}