Pith Number

pith:24R2XDAP

pith:2009:24R2XDAPQ25M4RFRLKHH7G7J3W

not attested not anchored not stored refs pending

Self-Improving Algorithms

Bernard Chazelle, C. Seshadhri, Ding Liu, Kenneth L. Clarkson, Nir Ailon, Wolfgang Mulzer

arxiv:0907.0884 v2 · 2009-07-05 · cs.DS · 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{24R2XDAPQ25M4RFRLKHH7G7J3W}

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	2026-05-18T04:21:12.457815Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d723ab8c0f86bace44b15a8e7f9be9dd9879b8e885c47a77b00e24742c1117c0

Aliases

arxiv: 0907.0884 · arxiv_version: 0907.0884v2 · doi: 10.48550/arxiv.0907.0884 · pith_short_12: 24R2XDAPQ25M · pith_short_16: 24R2XDAPQ25M4RFR · pith_short_8: 24R2XDAP

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/24R2XDAPQ25M4RFRLKHH7G7J3W \
  | 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: d723ab8c0f86bace44b15a8e7f9be9dd9879b8e885c47a77b00e24742c1117c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "259e87901405444833e3c39b190c19d9c0ea0c0006970d722ca35a2d1f55f733",
    "cross_cats_sorted": [
      "cs.CG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2009-07-05T19:48:43Z",
    "title_canon_sha256": "b66dd1dbf6933edcb76cc30c08f7e0fcaec95ac327534bb9da3fcf7886f9c434"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.0884",
    "kind": "arxiv",
    "version": 2
  }
}