Pith Number

pith:C4BBLDYZ

pith:2019:C4BBLDYZMMNXEAWUU3D66FP2TQ

not attested not anchored not stored refs pending

15-nodal quartic surfaces.I: quintic del Pezzo surfaces and congruences of lines in $\bbP^3$

Igor Dolgachev

arxiv:1906.12295 v2 · 2019-06-28 · 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{C4BBLDYZMMNXEAWUU3D66FP2TQ}

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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.

Cited by

1 paper in Pith

15-nodal quartic surfaces. Part II: The automorphism group

Receipt and verification

First computed	2026-07-05T00:06:21.360096Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1702158f19631b7202d4a6c7ef15fa9c02bef4bd2e83f3c2cce1aabbe84edad8

Aliases

arxiv: 1906.12295 · arxiv_version: 1906.12295v2 · doi: 10.48550/arxiv.1906.12295 · pith_short_12: C4BBLDYZMMNX · pith_short_16: C4BBLDYZMMNXEAWU · pith_short_8: C4BBLDYZ

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/C4BBLDYZMMNXEAWUU3D66FP2TQ \
  | 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: 1702158f19631b7202d4a6c7ef15fa9c02bef4bd2e83f3c2cce1aabbe84edad8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "96716fde3d90d0cca451a1d422baff70117bda347ce5f3ebb16a7283dad74990",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-06-28T16:37:25Z",
    "title_canon_sha256": "18e37a379cfde9c55ab301de951beb54c9036f680386c9a0625b3f22c0c09a2c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.12295",
    "kind": "arxiv",
    "version": 2
  }
}