Pith Number

pith:IY27LSNH

pith:2017:IY27LSNHTXTXK2VQKBAFUDQSCQ

not attested not anchored not stored refs pending

Configurations of points and topology of real line arrangements

Beno\^it Guerville-Ball\'e, Juan Viu-Sos

arxiv:1702.00922 v4 · 2017-02-03 · math.GT · math.AG · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IY27LSNHTXTXK2VQKBAFUDQSCQ}

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	2026-05-18T00:19:19.483067Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4635f5c9a79de7756ab050405a0e121404f28cd93a7e8db785cc802272c8a6ce

Aliases

arxiv: 1702.00922 · arxiv_version: 1702.00922v4 · doi: 10.48550/arxiv.1702.00922 · pith_short_12: IY27LSNHTXTX · pith_short_16: IY27LSNHTXTXK2VQ · pith_short_8: IY27LSNH

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/IY27LSNHTXTXK2VQKBAFUDQSCQ \
  | 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: 4635f5c9a79de7756ab050405a0e121404f28cd93a7e8db785cc802272c8a6ce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a5e18696ff24ef03eda6e70d1c2410403ed12ab7404296e764eafd23271a2ab",
    "cross_cats_sorted": [
      "math.AG",
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2017-02-03T07:12:38Z",
    "title_canon_sha256": "5d69edd3d40cbff7318a91bd35a04a20024ef0c3b89c285a1e4a10131fe31069"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.00922",
    "kind": "arxiv",
    "version": 4
  }
}