Pith Number

pith:BSGQUAHD

pith:2018:BSGQUAHDEFE53NWAZMO2HTXGTG

not attested not anchored not stored refs pending

Moduli of non-standard Nikulin surfaces in low genus

Alessandro Verra, Andreas Leopold Knutsen, Margherita Lelli-Chiesa

arxiv:1802.01201 v2 · 2018-02-04 · 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{BSGQUAHDEFE53NWAZMO2HTXGTG}

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	2026-05-17T23:55:34.566048Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c8d0a00e32149ddb6c0cb1da3cee699bf6bca3d86849ad1b916524920ec4666

Aliases

arxiv: 1802.01201 · arxiv_version: 1802.01201v2 · doi: 10.48550/arxiv.1802.01201 · pith_short_12: BSGQUAHDEFE5 · pith_short_16: BSGQUAHDEFE53NWA · pith_short_8: BSGQUAHD

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/BSGQUAHDEFE53NWAZMO2HTXGTG \
  | 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: 0c8d0a00e32149ddb6c0cb1da3cee699bf6bca3d86849ad1b916524920ec4666

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4db0cb36907ff198aac753d2d1875f0f9a5e7987783b5c71b7f5f8c9f378794c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-02-04T21:40:23Z",
    "title_canon_sha256": "8b387d4f96df7dada7354b96b32bf3f1c92fbd557e01841938194a5dd744f73b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.01201",
    "kind": "arxiv",
    "version": 2
  }
}