Pith Number

pith:5XAVL3KK

pith:2025:5XAVL3KK452QQFLZJOYL4OTSJQ

not attested not anchored not stored refs pending

A story of webs: the webs by conics on del Pezzo quartic surfaces and Gelfand-MacPherson's web of the spinor tenfold

Luc Pirio

arxiv:2507.12180 v1 · 2025-07-16 · 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{5XAVL3KK452QQFLZJOYL4OTSJQ}

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	2026-07-05T11:44:51.391734Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

edc155ed4ae7750815794bb0be3a724c2eda439da1bf06a2ae8b5ed33d1733d8

Aliases

arxiv: 2507.12180 · arxiv_version: 2507.12180v1 · doi: 10.48550/arxiv.2507.12180 · pith_short_12: 5XAVL3KK452Q · pith_short_16: 5XAVL3KK452QQFLZ · pith_short_8: 5XAVL3KK

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/5XAVL3KK452QQFLZJOYL4OTSJQ \
  | 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: edc155ed4ae7750815794bb0be3a724c2eda439da1bf06a2ae8b5ed33d1733d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0fc60417dbe0ab82bc1ee9e915f2e97c46b48e3e7903ce3bd1045be737d1f1a9",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2025-07-16T12:26:50Z",
    "title_canon_sha256": "3547571dcd04fde27323182da82cee6e0c311bee9acea349b4ef6f6f22cf7e60"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.12180",
    "kind": "arxiv",
    "version": 1
  }
}