Pith Number

pith:SY4YAXNY

pith:2017:SY4YAXNYHBOGMFMONR4OPJHFYH

not attested not anchored not stored refs pending

Bach-flat isotropic gradient Ricci solitons

Eduardo Garc\'ia-R\'io, Esteban Calvi\~no-Louzao, Ixchel Guti\'errez-Rodr\'iguez, Ram\'on V\'azquez-Lorenzo

arxiv:1702.07369 v1 · 2017-02-23 · 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{SY4YAXNYHBOGMFMONR4OPJHFYH}

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	2026-05-18T00:20:56.673702Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9639805db8385c66158e6c78e7a4e5c1e8956bbb4cfbae9923522167f4c0c69b

Aliases

arxiv: 1702.07369 · arxiv_version: 1702.07369v1 · doi: 10.48550/arxiv.1702.07369 · pith_short_12: SY4YAXNYHBOG · pith_short_16: SY4YAXNYHBOGMFMO · pith_short_8: SY4YAXNY

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/SY4YAXNYHBOGMFMONR4OPJHFYH \
  | 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: 9639805db8385c66158e6c78e7a4e5c1e8956bbb4cfbae9923522167f4c0c69b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "76c1105337565a484ec287ddd9c8b333f341faf7cb7501ddc08b01fc8517b887",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2017-02-23T19:15:46Z",
    "title_canon_sha256": "7c284f95da6023ad7b1997657fcf57b5bb65e9b09d10006db4105a2d80228376"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.07369",
    "kind": "arxiv",
    "version": 1
  }
}