Pith Number

pith:FGCQFZIG

pith:2010:FGCQFZIG6WV3KI6T2ND5WFQVNK

not attested not anchored not stored refs pending

Naturally reductive pseudo-Riemannian spaces

Gabriela P. Ovando

arxiv:1007.4695 v2 · 2010-07-27 · 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{FGCQFZIG6WV3KI6T2ND5WFQVNK}

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	2026-05-18T04:35:04.728279Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

298502e506f5abb523d3d347db16156a90c6bd154e9bb92f045fe24cbdb7e9c7

Aliases

arxiv: 1007.4695 · arxiv_version: 1007.4695v2 · doi: 10.48550/arxiv.1007.4695 · pith_short_12: FGCQFZIG6WV3 · pith_short_16: FGCQFZIG6WV3KI6T · pith_short_8: FGCQFZIG

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/FGCQFZIG6WV3KI6T2ND5WFQVNK \
  | 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: 298502e506f5abb523d3d347db16156a90c6bd154e9bb92f045fe24cbdb7e9c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f1d108c82fe40398c3e565296a91daf24231cb05eb6bbb989c81c6a5081da42d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2010-07-27T12:37:58Z",
    "title_canon_sha256": "dcda94992a120788a4b223a1121001bb6e3157e74f0743b58f2334dd2d35c493"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1007.4695",
    "kind": "arxiv",
    "version": 2
  }
}