Pith Number

pith:UAY53RVC

pith:2021:UAY53RVCC5ELDGDP7ZJWPJK2XA

not attested not anchored not stored refs pending

Kummer quartic surfaces, strict self-duality, and more

Fabrizio Catanese

arxiv:2101.10501 v2 · 2021-01-26 · math.AG · math.CV

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UAY53RVCC5ELDGDP7ZJWPJK2XA}

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.

Cited by

1 paper in Pith

Symbolic Approximations to Ricci-flat Metrics Via Extrinsic Symmetries of Calabi-Yau Hypersurfaces

Receipt and verification

First computed	2026-07-05T02:42:29.174468Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a031ddc6a21748b1986ffe5367a55ab80e3a2af72cd296c1d95014de70f48ccb

Aliases

arxiv: 2101.10501 · arxiv_version: 2101.10501v2 · doi: 10.48550/arxiv.2101.10501 · pith_short_12: UAY53RVCC5EL · pith_short_16: UAY53RVCC5ELDGDP · pith_short_8: UAY53RVC

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/UAY53RVCC5ELDGDP7ZJWPJK2XA \
  | 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: a031ddc6a21748b1986ffe5367a55ab80e3a2af72cd296c1d95014de70f48ccb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "70f07f20a01ded2d55ebd3ce142023cf9c5f6605cc6612faff139e9e66b6dd28",
    "cross_cats_sorted": [
      "math.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2021-01-26T00:51:58Z",
    "title_canon_sha256": "7e5466cdbd7cf61294d9c42047bb5b26f6dd1a7646798d9f1c7ef2f1e529194f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.10501",
    "kind": "arxiv",
    "version": 2
  }
}