Pith Number

pith:5V25LL23

pith:2013:5V25LL23LWGOFFJKSCFD6RUNQX

not attested not anchored not stored refs pending

Independent and Hitting Sets of Rectangles Intersecting a Diagonal Line : Algorithms and Complexity

Jos\'e A. Soto, Jos\'e R. Correa, Laurent Feuilloley, Pablo P\'erez-Lantero

arxiv:1309.6659 v2 · 2013-09-25 · 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{5V25LL23LWGOFFJKSCFD6RUNQX}

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	2026-05-18T00:56:53.659617Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed75d5af5b5d8ce2952a908a3f468d85d3957ad0bb23563bf17ab7039a3587bd

Aliases

arxiv: 1309.6659 · arxiv_version: 1309.6659v2 · doi: 10.48550/arxiv.1309.6659 · pith_short_12: 5V25LL23LWGO · pith_short_16: 5V25LL23LWGOFFJK · pith_short_8: 5V25LL23

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/5V25LL23LWGOFFJKSCFD6RUNQX \
  | 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: ed75d5af5b5d8ce2952a908a3f468d85d3957ad0bb23563bf17ab7039a3587bd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "abf3cd89c44446f939f3fca7e9b8a9bc54bfcca409745777cf3309348ab988f8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2013-09-25T20:39:43Z",
    "title_canon_sha256": "007f2526a7c41add34258dc4e5083469dc358c1720a63ae2af77a14beabad162"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.6659",
    "kind": "arxiv",
    "version": 2
  }
}