Pith Number

pith:PUNDM277

pith:2026:PUNDM277RCK43MDHPWLZQ22VBP

not attested not anchored not stored refs pending

Segre Varieties and Desarguesian Spreads

Antonio Cossidente, Francesco Pavese, Giuseppe Marino, John Sheekey, Paolo Santonastaso

arxiv:2605.22194 v1 · 2026-05-21 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PUNDM277RCK43MDHPWLZQ22VBP}

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	2026-05-22T01:04:31.228714Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d1a366bff8895cdb0677d97986b550bca63d0a5e55ca6ac51d2c9cda672a45d

Aliases

arxiv: 2605.22194 · arxiv_version: 2605.22194v1 · doi: 10.48550/arxiv.2605.22194 · pith_short_12: PUNDM277RCK4 · pith_short_16: PUNDM277RCK43MDH · pith_short_8: PUNDM277

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/PUNDM277RCK43MDHPWLZQ22VBP \
  | 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: 7d1a366bff8895cdb0677d97986b550bca63d0a5e55ca6ac51d2c9cda672a45d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "802bbf6b37f64fa29a8122e492e791fc063a856eec82b33adce91d56091a07b6",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2026-05-21T08:59:40Z",
    "title_canon_sha256": "38693318fc32baacf1851350885a601eefb8c39f757be8ed15f267b948d2b2cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.22194",
    "kind": "arxiv",
    "version": 1
  }
}