Pith Number

pith:7EXSHJQE

pith:2017:7EXSHJQE7RA2NXYN7DXSXWA7SZ

not attested not anchored not stored refs pending

Lorentzian $CR$ structures and nonembeddability

C. Denson Hill, Judith Brinkschulte

arxiv:1707.02722 v1 · 2017-07-10 · math.CV · 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{7EXSHJQE7RA2NXYN7DXSXWA7SZ}

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	2026-05-18T00:09:53.056787Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f92f23a604fc41a6df0df8ef2bd81f96703f4f9ec48ae9d034370ab3de164c17

Aliases

arxiv: 1707.02722 · arxiv_version: 1707.02722v1 · doi: 10.48550/arxiv.1707.02722 · pith_short_12: 7EXSHJQE7RA2 · pith_short_16: 7EXSHJQE7RA2NXYN · pith_short_8: 7EXSHJQE

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/7EXSHJQE7RA2NXYN7DXSXWA7SZ \
  | 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: f92f23a604fc41a6df0df8ef2bd81f96703f4f9ec48ae9d034370ab3de164c17

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5cbd8b28e88ae9cf98b1a05acbc9423f23f35783dd6295154ba1e1d658737a6b",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CV",
    "submitted_at": "2017-07-10T07:19:24Z",
    "title_canon_sha256": "81aeac3191aca1ceef273bae913fc6e9060345118ea9631b10d21d284196d4b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.02722",
    "kind": "arxiv",
    "version": 1
  }
}