Pith Number

pith:LUXPQUEY

pith:2011:LUXPQUEYRIJTZ3JLPJEN2FULI6

not attested not anchored not stored refs pending

Improved Approximation Guarantees for Lower-Bounded Facility Location

Chaitanya Swamy, Sara Ahmadian

arxiv:1104.3128 v2 · 2011-04-15 · cs.DS · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LUXPQUEYRIJTZ3JLPJEN2FULI6}

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	2026-05-18T03:46:47.783278Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5d2ef850988a133ced2b7a48dd168b47b6ff57ef279d02df2ee2839a83df66d7

Aliases

arxiv: 1104.3128 · arxiv_version: 1104.3128v2 · doi: 10.48550/arxiv.1104.3128 · pith_short_12: LUXPQUEYRIJT · pith_short_16: LUXPQUEYRIJTZ3JL · pith_short_8: LUXPQUEY

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/LUXPQUEYRIJTZ3JLPJEN2FULI6 \
  | 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: 5d2ef850988a133ced2b7a48dd168b47b6ff57ef279d02df2ee2839a83df66d7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5581a0dfbfaff6449134c0639a7db323eb4e305a0fcaafb7a7848f79ab2780ae",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2011-04-15T19:15:21Z",
    "title_canon_sha256": "ad8f65fb136cb295f1b7b2a42d539b7d029d3b4d4e08c726874704aee8cc2f83"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.3128",
    "kind": "arxiv",
    "version": 2
  }
}