Pith Number

pith:L6SGW6UZ

pith:2019:L6SGW6UZTQLJBAPEUZB6YHWHJC

not attested not anchored not stored refs pending

Differential $\{e\}$-structures for equivalences of $2$-nondegenerate Levi rank $1$ hypersurfaces $M^5 \subset \mathbb{C}^3$

Joel Merker (LM-Orsay), Wei Guo Foo (AMSS)

arxiv:1901.02028 v1 · 2019-01-07 · 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{L6SGW6UZTQLJBAPEUZB6YHWHJC}

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	2026-05-17T23:56:44.148476Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5fa46b7a999c169081e4a643ec1ec748ba43251cc9661f33c77f96cb8380ebd5

Aliases

arxiv: 1901.02028 · arxiv_version: 1901.02028v1 · doi: 10.48550/arxiv.1901.02028 · pith_short_12: L6SGW6UZTQLJ · pith_short_16: L6SGW6UZTQLJBAPE · pith_short_8: L6SGW6UZ

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/L6SGW6UZTQLJBAPEUZB6YHWHJC \
  | 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: 5fa46b7a999c169081e4a643ec1ec748ba43251cc9661f33c77f96cb8380ebd5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e0f4da8ef49d89e83f26ce440f3ba46c1ad5659b2d403b6f655648bd01005d78",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2019-01-07T19:20:51Z",
    "title_canon_sha256": "ad6ea001b04f13803c0de03f808dadb4cc05065044880a6daf981c1992ccfb69"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.02028",
    "kind": "arxiv",
    "version": 1
  }
}