Pith Number

pith:QIXSAKM5

pith:2025:QIXSAKM5MJT2D23H5RGVKLPCVQ

not attested not anchored not stored refs pending

Profiles, linear spaces, and unirationality of complete intersections

Raymond Cheng

arxiv:2508.08395 v2 · 2025-08-11 · 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{QIXSAKM5MJT2D23H5RGVKLPCVQ}

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	2026-06-12T01:09:12.129449Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

822f20299d6267a1eb67ec4d552de2ac22da6adbe30f82f605d604ef445b5c7d

Aliases

arxiv: 2508.08395 · arxiv_version: 2508.08395v2 · doi: 10.48550/arxiv.2508.08395 · pith_short_12: QIXSAKM5MJT2 · pith_short_16: QIXSAKM5MJT2D23H · pith_short_8: QIXSAKM5

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/QIXSAKM5MJT2D23H5RGVKLPCVQ \
  | 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: 822f20299d6267a1eb67ec4d552de2ac22da6adbe30f82f605d604ef445b5c7d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b9ade118653843d44faef575df39c84986214703d78cb24c616404bd3de42d79",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2025-08-11T18:37:03Z",
    "title_canon_sha256": "2a9c296b9f8823e0565b5d35f4f3fa351c5bc562327eb4fa0cba107d5694866d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.08395",
    "kind": "arxiv",
    "version": 2
  }
}