Pith Number

pith:OREWZUZ7

pith:2016:OREWZUZ7P2GOANPN7YWPKUU3DO

not attested not anchored not stored refs pending

Relative enumerative invariants of real nodal del Pezzo surfaces

Eugenii Shustin, Ilia Itenberg, Viatcheslav Kharlamov

arxiv:1611.02938 v3 · 2016-11-09 · 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{OREWZUZ7P2GOANPN7YWPKUU3DO}

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	2026-05-18T00:15:52.743995Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74496cd33f7e8ce035edfe2cf5529b1b99a5041fda6901450d5b11510772496b

Aliases

arxiv: 1611.02938 · arxiv_version: 1611.02938v3 · doi: 10.48550/arxiv.1611.02938 · pith_short_12: OREWZUZ7P2GO · pith_short_16: OREWZUZ7P2GOANPN · pith_short_8: OREWZUZ7

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/OREWZUZ7P2GOANPN7YWPKUU3DO \
  | 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: 74496cd33f7e8ce035edfe2cf5529b1b99a5041fda6901450d5b11510772496b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c35a6ec0214288c17cfc30e53c2af7e382ac3b3e478fc1312369296b07adc00",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2016-11-09T14:06:23Z",
    "title_canon_sha256": "81c5c87a586b7ebe91784e0a28f95cde4b5302e5ce0572abc55aa59281655593"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.02938",
    "kind": "arxiv",
    "version": 3
  }
}