Pith Number

pith:SD2D4QA4

pith:2017:SD2D4QA42PSI6RIN42HX7HH3FK

not attested not anchored not stored refs pending

A Bonnet-Myers type theorem for quaternionic contact structures

Davide Barilari, Stefan Ivanov

arxiv:1703.04340 v3 · 2017-03-13 · math.DG · math.MG · math.OC

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SD2D4QA42PSI6RIN42HX7HH3FK}

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	2026-05-17T23:58:50.326135Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90f43e401cd3e48f450de68f7f9cfb2a9ffa88a8477c998adcd34afadbf299c1

Aliases

arxiv: 1703.04340 · arxiv_version: 1703.04340v3 · doi: 10.48550/arxiv.1703.04340 · pith_short_12: SD2D4QA42PSI · pith_short_16: SD2D4QA42PSI6RIN · pith_short_8: SD2D4QA4

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/SD2D4QA42PSI6RIN42HX7HH3FK \
  | 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: 90f43e401cd3e48f450de68f7f9cfb2a9ffa88a8477c998adcd34afadbf299c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c1bd8061d5343c75fb32deea99de62635a3be7fd33975586f47d175c38bd3a7d",
    "cross_cats_sorted": [
      "math.MG",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2017-03-13T11:28:59Z",
    "title_canon_sha256": "5add26c2968906f90d8ac70e1ce5e79cbbd7f9a8b9a2d245f3ac6c6cdfad1601"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.04340",
    "kind": "arxiv",
    "version": 3
  }
}