Pith Number

pith:6VQ6Z5MD

pith:2013:6VQ6Z5MD2HSFBOTKGPKYWGVKTT

not attested not anchored not stored refs pending

Explicit description of spherical rigid hypersurfaces in C^2

Gerd Schmalz, Vladimir Ezhov

arxiv:1305.4785 v2 · 2013-05-21 · 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{6VQ6Z5MD2HSFBOTKGPKYWGVKTT}

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	2026-05-18T00:39:16.210474Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f561ecf583d1e450ba6a33d58b1aaa9cc5b0f532267c7b9815019d0627293c59

Aliases

arxiv: 1305.4785 · arxiv_version: 1305.4785v2 · doi: 10.48550/arxiv.1305.4785 · pith_short_12: 6VQ6Z5MD2HSF · pith_short_16: 6VQ6Z5MD2HSFBOTK · pith_short_8: 6VQ6Z5MD

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/6VQ6Z5MD2HSFBOTKGPKYWGVKTT \
  | 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: f561ecf583d1e450ba6a33d58b1aaa9cc5b0f532267c7b9815019d0627293c59

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d86fc5483ae63058a937d3f38d8bf118391e5e96be571dab6d19790c2798248e",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CV",
    "submitted_at": "2013-05-21T11:22:06Z",
    "title_canon_sha256": "0676635901df4f93b9bc5ddc0a7185031983f0a1591de37636e0b26c5e87409a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.4785",
    "kind": "arxiv",
    "version": 2
  }
}