Pith Number

pith:IRVPUO5M

pith:2015:IRVPUO5MLAPMW622OOMUEK2VGH

not attested not anchored not stored refs pending

Dual pivot Quicksort

David B. Penman, Vasileios Iliopoulos

arxiv:1503.08498 v1 · 2015-03-29 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IRVPUO5MLAPMW622OOMUEK2VGH}

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	2026-05-18T02:20:01.631037Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

446afa3bac581ecb7b5a7399422b5531f7ba879f8e7efc16c62752c125fa8546

Aliases

arxiv: 1503.08498 · arxiv_version: 1503.08498v1 · doi: 10.48550/arxiv.1503.08498 · pith_short_12: IRVPUO5MLAPM · pith_short_16: IRVPUO5MLAPMW622 · pith_short_8: IRVPUO5M

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/IRVPUO5MLAPMW622OOMUEK2VGH \
  | 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: 446afa3bac581ecb7b5a7399422b5531f7ba879f8e7efc16c62752c125fa8546

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "08295e1b4c06d0c2404db0536dea877727d9756ccbfe29343fb271dad771ccb6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-03-29T21:37:24Z",
    "title_canon_sha256": "2424cebd69ac6b69a869680deb7f374e7f969c98def33be8fdc10acb1dc4a576"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.08498",
    "kind": "arxiv",
    "version": 1
  }
}