Pith Number

pith:N7Y4BVOG

pith:2006:N7Y4BVOGEDDHEFDNKYYCGB74UO

not attested not anchored not stored refs pending

Quaternionic contact Einstein structures and the quaternionic contact Yamabe problem

Dimiter Vassilev, Ivan Minchev, Stefan Ivanov

arxiv:math/0611658 v5 · 2006-11-22 · math.DG · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N7Y4BVOGEDDHEFDNKYYCGB74UO}

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	2026-05-18T01:19:55.978763Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6ff1c0d5c620c672146d56302307fca3aeb02bfacb6dc9450dbc85fadb4dca76

Aliases

arxiv: math/0611658 · arxiv_version: math/0611658v5 · doi: 10.48550/arxiv.math/0611658 · pith_short_12: N7Y4BVOGEDDH · pith_short_16: N7Y4BVOGEDDHEFDN · pith_short_8: N7Y4BVOG

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/N7Y4BVOGEDDHEFDNKYYCGB74UO \
  | 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: 6ff1c0d5c620c672146d56302307fca3aeb02bfacb6dc9450dbc85fadb4dca76

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1578b84ac1c083706d5dc1a2cec40ec9d0e4e76b992c6947feb747c79635de65",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "math.DG",
    "submitted_at": "2006-11-22T17:19:00Z",
    "title_canon_sha256": "612e2ea5f548ee3614fc80967d87d166708095b553680b59a2a79a27f9d1d1a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0611658",
    "kind": "arxiv",
    "version": 5
  }
}