Pith Number

pith:RKLPRP3C

pith:2011:RKLPRP3C34V53DNEDWAS7ZYBSZ

not attested not anchored not stored refs pending

Approximation Algorithms for Maximum Independent Set of Pseudo-Disks

Sariel Har-Peled, Timothy M. Chan

arxiv:1103.1431 v1 · 2011-03-08 · 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{RKLPRP3C34V53DNEDWAS7ZYBSZ}

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	2026-05-18T04:27:15.857273Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8a96f8bf62df2bdd8da41d812fe70196782b2aa62f1457e96ad89f66ae04094e

Aliases

arxiv: 1103.1431 · arxiv_version: 1103.1431v1 · doi: 10.48550/arxiv.1103.1431 · pith_short_12: RKLPRP3C34V5 · pith_short_16: RKLPRP3C34V53DNE · pith_short_8: RKLPRP3C

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/RKLPRP3C34V53DNEDWAS7ZYBSZ \
  | 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: 8a96f8bf62df2bdd8da41d812fe70196782b2aa62f1457e96ad89f66ae04094e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b8689114d1c8419769cb96905bfff6c3ba664cc53c24243d0b984528f57c2a77",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2011-03-08T04:10:02Z",
    "title_canon_sha256": "5399b102655bc821b7e134e79e81b87ce243389c6ac2a96cea7df30256d497e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.1431",
    "kind": "arxiv",
    "version": 1
  }
}