Pith Number

pith:FCIH4KMM

pith:2016:FCIH4KMMAYPJ4D2F7TMYHHCLNV

not attested not anchored not stored refs pending

On the CR-curvature of Levi degenerate tube hypersurfaces

Alexander Isaev

arxiv:1608.02919 v4 · 2016-08-09 · 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{FCIH4KMMAYPJ4D2F7TMYHHCLNV}

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	2026-05-18T01:03:56.602751Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28907e298c061e9e0f45fcd9839c4b6d63dd5068c794f4feaf86a4c7d9159aba

Aliases

arxiv: 1608.02919 · arxiv_version: 1608.02919v4 · doi: 10.48550/arxiv.1608.02919 · pith_short_12: FCIH4KMMAYPJ · pith_short_16: FCIH4KMMAYPJ4D2F · pith_short_8: FCIH4KMM

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/FCIH4KMMAYPJ4D2F7TMYHHCLNV \
  | 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: 28907e298c061e9e0f45fcd9839c4b6d63dd5068c794f4feaf86a4c7d9159aba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "377b4ac5a14373fbf9c0443e7668f4b2fec76e10d762b3d6973e30b85a7eee4f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CV",
    "submitted_at": "2016-08-09T19:10:09Z",
    "title_canon_sha256": "584250267d7c125a3e56c3378a1dc7c330f137931318d200ff794598309bf7a5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.02919",
    "kind": "arxiv",
    "version": 4
  }
}