Pith Number

pith:WITKAF7L

pith:2025:WITKAF7LAFILDCJITF3OX4DYQ3

not attested not anchored not stored refs pending

Exploration of offsets of Cayley ovals and their singularities

Daniel Tsirkin, Thierry Dana-Picard

arxiv:2505.21028 v1 · 2025-05-27 · 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{WITKAF7LAFILDCJITF3OX4DYQ3}

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	2026-07-05T11:10:22.636976Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b226a017eb0150b189289976ebf07886da17eec29abd21c471f31bf7fbb8643d

Aliases

arxiv: 2505.21028 · arxiv_version: 2505.21028v1 · doi: 10.48550/arxiv.2505.21028 · pith_short_12: WITKAF7LAFIL · pith_short_16: WITKAF7LAFILDCJI · pith_short_8: WITKAF7L

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/WITKAF7LAFILDCJITF3OX4DYQ3 \
  | 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: b226a017eb0150b189289976ebf07886da17eec29abd21c471f31bf7fbb8643d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e0b3d9cc263168a8e365df5fee4c6f5f22d3c130af07510e540de23a11c42a29",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2025-05-27T11:01:42Z",
    "title_canon_sha256": "e2d5c1d04f690222069ac59f5a1c632fc02052b9b3f188b5677876fd9dfd87bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.21028",
    "kind": "arxiv",
    "version": 1
  }
}