Pith Number

pith:CKSBFAVT

pith:2019:CKSBFAVTV5BGS3CPMZCYLJ4BU2

not attested not anchored not stored refs pending

Dependent subsets of embedded projective varieties

Edoardo Ballico

arxiv:1905.08149 v1 · 2019-05-20 · 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{CKSBFAVTV5BGS3CPMZCYLJ4BU2}

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	2026-05-17T23:45:47.455405Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

12a41282b3af42696c4f664585a781a6b7e5f07f087553f9d8960e6e4da85479

Aliases

arxiv: 1905.08149 · arxiv_version: 1905.08149v1 · doi: 10.48550/arxiv.1905.08149 · pith_short_12: CKSBFAVTV5BG · pith_short_16: CKSBFAVTV5BGS3CP · pith_short_8: CKSBFAVT

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/CKSBFAVTV5BGS3CPMZCYLJ4BU2 \
  | 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: 12a41282b3af42696c4f664585a781a6b7e5f07f087553f9d8960e6e4da85479

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "57ddf16e946e02841ae9164e1a1fba8eb70a5feba3554866e4fbc068f3b4d91d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-05-20T14:54:27Z",
    "title_canon_sha256": "bf52e100d077fdec9c00fa87f04483a1834e24cbb48f74c9459ffb576b5790fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.08149",
    "kind": "arxiv",
    "version": 1
  }
}