Pith Number

pith:7UID7VT7

pith:2017:7UID7VT7FK4ILDIT5IM7VO7QQZ

not attested not anchored not stored refs pending

Canonical fibrations of contact metric $(\kappa,\mu)$-spaces

Antonio Lotta, Eugenia Loiudice

arxiv:1704.01310 v1 · 2017-04-05 · 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{7UID7VT7FK4ILDIT5IM7VO7QQZ}

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	2026-05-17T23:39:49.292014Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd103fd67f2ab8858d13ea19fabbf08669cadd1f612536d50390c1b4c6bab0c4

Aliases

arxiv: 1704.01310 · arxiv_version: 1704.01310v1 · doi: 10.48550/arxiv.1704.01310 · pith_short_12: 7UID7VT7FK4I · pith_short_16: 7UID7VT7FK4ILDIT · pith_short_8: 7UID7VT7

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/7UID7VT7FK4ILDIT5IM7VO7QQZ \
  | 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: fd103fd67f2ab8858d13ea19fabbf08669cadd1f612536d50390c1b4c6bab0c4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "796dc03bbd81845928fb2002581ae8a1d002028271233cf37c4ca321a8270284",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2017-04-05T08:45:13Z",
    "title_canon_sha256": "eac7a0535970c652dfb889345978dcb35c35be35381e6f1e40794fee09bd129c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.01310",
    "kind": "arxiv",
    "version": 1
  }
}