Pith Number

pith:ISVAFXBL

pith:2025:ISVAFXBLBVQWP6RH3IMF32XMYX

not attested not anchored not stored refs pending

Determining unit distance graphs with coordinates in $\mathbb{Z}^2$ is NP-complete

Eric Binnendyk

arxiv:2510.15002 v3 · 2025-10-16 · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ISVAFXBLBVQWP6RH3IMF32XMYX}

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	2026-05-25T02:01:08.489942Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

44aa02dc2b0d6167fa27da185deaecc5f815751a5f2321a078cd9c111a22d96d

Aliases

arxiv: 2510.15002 · arxiv_version: 2510.15002v3 · doi: 10.48550/arxiv.2510.15002 · pith_short_12: ISVAFXBLBVQW · pith_short_16: ISVAFXBLBVQWP6RH · pith_short_8: ISVAFXBL

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/ISVAFXBLBVQWP6RH3IMF32XMYX \
  | 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: 44aa02dc2b0d6167fa27da185deaecc5f815751a5f2321a078cd9c111a22d96d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6204422954cefd088a12bfa72d128cbae75aa8ed703b1b4b6a080e9d9d2904c0",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2025-10-16T01:12:31Z",
    "title_canon_sha256": "b1c37ef59822c9b1fa295e70ef5a3db4ab591d5d10385a81188731436b8b2952"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2510.15002",
    "kind": "arxiv",
    "version": 3
  }
}