Pith Number

pith:F37LZ2EV

pith:2018:F37LZ2EVF3ZDG3FHD6CDWFUGOY

not attested not anchored not stored refs pending

Null screen quasi-conformal hypersurfaces in semi-Riemannian manifolds and applications

Didier Solis, Matias Navarro, Oscar Palmas

arxiv:1810.03735 v1 · 2018-10-08 · 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{F37LZ2EVF3ZDG3FHD6CDWFUGOY}

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	2026-05-18T00:03:44.628360Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2efebce8952ef2336ca71f843b1686760866eee58d47cf8daf02a85e7fdfb711

Aliases

arxiv: 1810.03735 · arxiv_version: 1810.03735v1 · doi: 10.48550/arxiv.1810.03735 · pith_short_12: F37LZ2EVF3ZD · pith_short_16: F37LZ2EVF3ZDG3FH · pith_short_8: F37LZ2EV

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/F37LZ2EVF3ZDG3FHD6CDWFUGOY \
  | 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: 2efebce8952ef2336ca71f843b1686760866eee58d47cf8daf02a85e7fdfb711

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fccff7744641a11f4938bc2874549a6f7b8ec2d4c02e0fb18cec2be6b0f49bd0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2018-10-08T22:50:13Z",
    "title_canon_sha256": "207d670f18dcd95c7829d8349bf9562ad0888c51a4ac0bceed778008036b0a7d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.03735",
    "kind": "arxiv",
    "version": 1
  }
}