Pith Number

pith:S6OHKZJV

pith:2012:S6OHKZJVU4ZC6OQIXGRFFRJG43

not attested not anchored not stored refs pending

The Cotton tensor and the Ricci flow

Carlo Mantegazza, Michele Rimoldi, Samuele Mongodi

arxiv:1203.4433 v3 · 2012-03-20 · 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{S6OHKZJVU4ZC6OQIXGRFFRJG43}

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	2026-05-18T00:01:01.087215Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

979c756535a7322f3a08b9a252c526e6cfb6b8c589a6fdc9682a2c48c46574f8

Aliases

arxiv: 1203.4433 · arxiv_version: 1203.4433v3 · doi: 10.48550/arxiv.1203.4433 · pith_short_12: S6OHKZJVU4ZC · pith_short_16: S6OHKZJVU4ZC6OQI · pith_short_8: S6OHKZJV

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/S6OHKZJVU4ZC6OQIXGRFFRJG43 \
  | 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: 979c756535a7322f3a08b9a252c526e6cfb6b8c589a6fdc9682a2c48c46574f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f957d5af9db81d1c6be7ec698b7f8ac1747deef22c45ca8d0cd8d1a9a08fd05",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2012-03-20T13:38:21Z",
    "title_canon_sha256": "43053506342c32d1dd99d7dd5e8963d18c79777f9f2cf1b935f5029a6342f47d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.4433",
    "kind": "arxiv",
    "version": 3
  }
}