Pith Number

pith:LQ6OQ6IR

pith:2011:LQ6OQ6IRSIS5YXFYEWIASPEWBZ

not attested not anchored not stored refs pending

On the maximum number of isosceles right triangles in a finite point set

Bernardo M. \'Abrego, David B. Roberts, Silvia Fern\'andez-Merchant

arxiv:1102.5347 v1 · 2011-02-25 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LQ6OQ6IRSIS5YXFYEWIASPEWBZ}

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	2026-05-18T04:27:47.159629Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5c3ce879119225dc5cb82590093c960e5f6ecec2ab7971d760158abd07babf57

Aliases

arxiv: 1102.5347 · arxiv_version: 1102.5347v1 · doi: 10.48550/arxiv.1102.5347 · pith_short_12: LQ6OQ6IRSIS5 · pith_short_16: LQ6OQ6IRSIS5YXFY · pith_short_8: LQ6OQ6IR

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/LQ6OQ6IRSIS5YXFYEWIASPEWBZ \
  | 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: 5c3ce879119225dc5cb82590093c960e5f6ecec2ab7971d760158abd07babf57

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b8d16358b2e910f368eb8a59c0acb5d8be52d0fc88c87ad5abfc0de0331b868",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-02-25T21:05:50Z",
    "title_canon_sha256": "a86503a0174dcb80d8bbaefe81244ade87eb6a3b9d3e30fa42ab278dabbc07b7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.5347",
    "kind": "arxiv",
    "version": 1
  }
}