Pith Number

pith:YTAWIV2Q

pith:2024:YTAWIV2QQBC5RAD57N7BPRU7OY

not attested not anchored not stored refs pending

On the number of real forms of a complex variety

Gerard van der Geer, Xun Yu

arxiv:2401.13284 v3 · 2024-01-24 · 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{YTAWIV2QQBC5RAD57N7BPRU7OY}

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	2026-05-20T14:03:17.216853Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4c16457508045d8807dfb7e17c69f76292399ab5f9c73139dfaa0dc05623271

Aliases

arxiv: 2401.13284 · arxiv_version: 2401.13284v3 · doi: 10.48550/arxiv.2401.13284 · pith_short_12: YTAWIV2QQBC5 · pith_short_16: YTAWIV2QQBC5RAD5 · pith_short_8: YTAWIV2Q

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/YTAWIV2QQBC5RAD57N7BPRU7OY \
  | 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: c4c16457508045d8807dfb7e17c69f76292399ab5f9c73139dfaa0dc05623271

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8dacc728223c569946411214fefae8e80275457e627e0fab311241eb659af351",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2024-01-24T07:57:02Z",
    "title_canon_sha256": "cff64e8272a14ec5ad2b4d4f2b772e4d641f4e1a91090cb492bde9ccdfd63252"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2401.13284",
    "kind": "arxiv",
    "version": 3
  }
}