Pith Number

pith:CKLKIF7R

pith:2019:CKLKIF7RXKTVWO6AH57YNGSLF2

not attested not anchored not stored refs pending

A variety that cannot be dominated by one that lifts

Remy van Dobben de Bruyn

arxiv:1902.07885 v2 · 2019-02-21 · 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{CKLKIF7RXKTVWO6AH57YNGSLF2}

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	2026-05-17T23:51:25.634264Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1296a417f1baa75b3bc03f7f869a4b2eabb2af4654fd0edb8436c4a1f3115f5a

Aliases

arxiv: 1902.07885 · arxiv_version: 1902.07885v2 · doi: 10.48550/arxiv.1902.07885 · pith_short_12: CKLKIF7RXKTV · pith_short_16: CKLKIF7RXKTVWO6A · pith_short_8: CKLKIF7R

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/CKLKIF7RXKTVWO6AH57YNGSLF2 \
  | 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: 1296a417f1baa75b3bc03f7f869a4b2eabb2af4654fd0edb8436c4a1f3115f5a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "79f63d2d38a4c50afccb5689cb0a8d5b10a0fcc489a8de08a36342c43b55fae0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-02-21T06:46:39Z",
    "title_canon_sha256": "18e3473dee8038842f10e4b7cb04fa439bf857e427f4f593eb8b940234554e21"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.07885",
    "kind": "arxiv",
    "version": 2
  }
}