Pith Number

pith:BQDKH64I

pith:2003:BQDKH64IE7D5TROPLAQW6WUCZJ

not attested not anchored not stored refs pending

Topology and combinatorics of real line arrangements

E.Artal, J.Carmona, J.I.Cogolludo, M.Marco

arxiv:math/0307296 v2 · 2003-07-22 · 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{BQDKH64IE7D5TROPLAQW6WUCZJ}

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	2026-05-18T00:16:51.353577Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c06a3fb8827c7d9c5cf58216f5a82ca7639431b755827ab93fa5259004d37d8

Aliases

arxiv: math/0307296 · arxiv_version: math/0307296v2 · doi: 10.48550/arxiv.math/0307296 · pith_short_12: BQDKH64IE7D5 · pith_short_16: BQDKH64IE7D5TROP · pith_short_8: BQDKH64I

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/BQDKH64IE7D5TROPLAQW6WUCZJ \
  | 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: 0c06a3fb8827c7d9c5cf58216f5a82ca7639431b755827ab93fa5259004d37d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1bf48fd1f17cf3061181dc9ed96397924995cd07fe31ffe4dfe00f56a1ff15b6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.AG",
    "submitted_at": "2003-07-22T14:04:20Z",
    "title_canon_sha256": "e2b03910273a58392de5dc712b8ac065f2e5998170ddcd01cfb83b3e99354da5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0307296",
    "kind": "arxiv",
    "version": 2
  }
}