Pith Number

pith:WRFWPH4L

pith:2025:WRFWPH4LSRQG56HBHT2THA3EMX

not attested not anchored not stored refs pending

Separating Two Points with Obstacles in the Plane: Improved Upper and Lower Bounds

Anurag Murty Naredla, Jack Spalding-Jamieson

arxiv:2504.17289 v2 · 2025-04-24 · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WRFWPH4LSRQG56HBHT2THA3EMX}

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	2026-07-05T11:35:55.468299Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b44b679f8b94606ef8e13cf533836465d1fa3c86505a8861f1d60b2eb9a97941

Aliases

arxiv: 2504.17289 · arxiv_version: 2504.17289v2 · doi: 10.48550/arxiv.2504.17289 · pith_short_12: WRFWPH4LSRQG · pith_short_16: WRFWPH4LSRQG56HB · pith_short_8: WRFWPH4L

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/WRFWPH4LSRQG56HBHT2THA3EMX \
  | 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: b44b679f8b94606ef8e13cf533836465d1fa3c86505a8861f1d60b2eb9a97941

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bace3cceecc26c15d1c340873b9d54bbc1bef622d57fd4ba1e9ce9cc9de6ad9d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2025-04-24T06:31:46Z",
    "title_canon_sha256": "7b5b1228ce31e17e5fbaae84545b3900f3b7723e38b3da6f01d7de51e5559d4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.17289",
    "kind": "arxiv",
    "version": 2
  }
}