Pith Number

pith:JXGJVZWJ

pith:2026:JXGJVZWJHC6EW2JENHUYMSNO5O

not attested not anchored not stored refs pending

Ricci Flow Preserves Positive Sectional Curvature on Homogeneous Spheres

David Gonz\'alez-\'Alvaro, Jason DeVito, Masoumeh Zarei

arxiv:2606.21417 v1 · 2026-06-19 · math.DG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JXGJVZWJHC6EW2JENHUYMSNO5O}

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	2026-06-23T01:13:09.623468Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4dcc9ae6c938bc4b692469e98649aeebaa0140360f790fad8986a1c317972728

Aliases

arxiv: 2606.21417 · arxiv_version: 2606.21417v1 · doi: 10.48550/arxiv.2606.21417 · pith_short_12: JXGJVZWJHC6E · pith_short_16: JXGJVZWJHC6EW2JE · pith_short_8: JXGJVZWJ

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/JXGJVZWJHC6EW2JENHUYMSNO5O \
  | 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: 4dcc9ae6c938bc4b692469e98649aeebaa0140360f790fad8986a1c317972728

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e5ee680570f6692a39c11df9abe5fbc9cc2704c81a415e7a6bf3789ca1d1ab9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2026-06-19T13:35:42Z",
    "title_canon_sha256": "e48b1ba090b9eec41ce42de83f1cf28c4aa2ea96ce868a447648012efe0854ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.21417",
    "kind": "arxiv",
    "version": 1
  }
}