Pith Number

pith:Y43VLW5G

pith:2018:Y43VLW5GQIIKZJE6JVRTTKZJSR

not attested not anchored not stored refs pending

On the Lichnerowicz conjecture for CR manifolds with mixed signature

Jeffrey S. Case, Sean N. Curry, Vladimir S. Matveev

arxiv:1802.00083 v1 · 2018-01-31 · math.DG · math.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y43VLW5GQIIKZJE6JVRTTKZJSR}

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	2026-05-18T00:16:55.686225Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c73755dba68210aca49e4d6339ab29944871d063b541fb002542e8bd3d772d10

Aliases

arxiv: 1802.00083 · arxiv_version: 1802.00083v1 · doi: 10.48550/arxiv.1802.00083 · pith_short_12: Y43VLW5GQIIK · pith_short_16: Y43VLW5GQIIKZJE6 · pith_short_8: Y43VLW5G

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/Y43VLW5GQIIKZJE6JVRTTKZJSR \
  | 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: c73755dba68210aca49e4d6339ab29944871d063b541fb002542e8bd3d772d10

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "68d1fe524f691bc45273b9a026728d662b4587ad67034a7065773b3dd78c29b0",
    "cross_cats_sorted": [
      "math.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2018-01-31T22:10:08Z",
    "title_canon_sha256": "e0fbf17a40a0b9abf76f21cd0feb993c8bac3acef866301fd0dd804047419a38"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.00083",
    "kind": "arxiv",
    "version": 1
  }
}