Pith Number

pith:HS636MV2

pith:2011:HS636MV2TNMZR6CZVYI2S7EIOW

not attested not anchored not stored refs pending

Darboux cyclides and webs from circles

Helmut Pottmann, Ling Shi, Mikhail Skopenkov

arxiv:1106.1354 v1 · 2011-06-07 · math.AG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HS636MV2TNMZR6CZVYI2S7EIOW}

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	2026-05-18T04:06:07.854556Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3cbdbf32ba9b5998f859ae11a97c8875a71f76482cb9ae1876a8886bc4e2337f

Aliases

arxiv: 1106.1354 · arxiv_version: 1106.1354v1 · doi: 10.48550/arxiv.1106.1354 · pith_short_12: HS636MV2TNMZ · pith_short_16: HS636MV2TNMZR6CZ · pith_short_8: HS636MV2

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/HS636MV2TNMZR6CZVYI2S7EIOW \
  | 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: 3cbdbf32ba9b5998f859ae11a97c8875a71f76482cb9ae1876a8886bc4e2337f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a740ee90226c9791f0bbe12f80d0a39e0fa84914b3fa5638a20ebfc8fb7bf13d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2011-06-07T14:03:30Z",
    "title_canon_sha256": "8cbc2f13bf9760d4e523ebccb94f5e6af91f7ed9a120eb9fe9fdfb29c24d4f09"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.1354",
    "kind": "arxiv",
    "version": 1
  }
}