Pith Number

pith:N2GFW4CX

pith:2010:N2GFW4CXRIGRI3X4JU2NQK3YTY

not attested not anchored not stored refs pending

On the Classification of Planar Contact Structures

M. Firat Arikan, Selahi Durusoy

arxiv:1008.1102 v2 · 2010-08-05 · math.GT · math.SG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N2GFW4CXRIGRI3X4JU2NQK3YTY}

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	2026-05-18T00:20:27.980814Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e8c5b70578a0d146efc4d34d82b789e10e75b78bf382d8f419cbd5bfd744613

Aliases

arxiv: 1008.1102 · arxiv_version: 1008.1102v2 · doi: 10.48550/arxiv.1008.1102 · pith_short_12: N2GFW4CXRIGR · pith_short_16: N2GFW4CXRIGRI3X4 · pith_short_8: N2GFW4CX

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/N2GFW4CXRIGRI3X4JU2NQK3YTY \
  | 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: 6e8c5b70578a0d146efc4d34d82b789e10e75b78bf382d8f419cbd5bfd744613

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "18f6536ff66281761b97c35021f0d3d1ac92e746cd94cf49411d6bb8323cc3ba",
    "cross_cats_sorted": [
      "math.SG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2010-08-05T23:29:20Z",
    "title_canon_sha256": "06efc885a0af7c67959f36fbaa79ceab87e9a4df104d8fe049af62dfb22f5f41"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1008.1102",
    "kind": "arxiv",
    "version": 2
  }
}