Pith Number

pith:TUHF63FE

pith:2012:TUHF63FE7Y4JQHYMVM6VE4QQ2R

not attested not anchored not stored refs pending

The $\eta$-Einstein condition on indefinite s-manifolds

Letizia Brunetti

arxiv:1202.3289 v1 · 2012-02-15 · 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{TUHF63FE7Y4JQHYMVM6VE4QQ2R}

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	2026-05-18T04:02:14.196768Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9d0e5f6ca4fe38981f0cab3d527210d454758224183ca489149bc8733cc657bb

Aliases

arxiv: 1202.3289 · arxiv_version: 1202.3289v1 · doi: 10.48550/arxiv.1202.3289 · pith_short_12: TUHF63FE7Y4J · pith_short_16: TUHF63FE7Y4JQHYM · pith_short_8: TUHF63FE

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/TUHF63FE7Y4JQHYMVM6VE4QQ2R \
  | 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: 9d0e5f6ca4fe38981f0cab3d527210d454758224183ca489149bc8733cc657bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ae608606bbf5460ed4f59945125a4432fc90df7743aa7679972f4c17d674a6fd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2012-02-15T12:10:42Z",
    "title_canon_sha256": "6c9ca79c85d584951cb09c49d573763f1b5c0aa109dbefa82f5280be54d70fb7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.3289",
    "kind": "arxiv",
    "version": 1
  }
}