Pith Number

pith:6QTWYXVR

pith:2014:6QTWYXVR5ZF4IGE7YVES6ZD7H2

not attested not anchored not stored refs pending

O(log log rank) Competitive-Ratio for the Matroid Secretary Problem

Oded Lachish

arxiv:1403.7343 v4 · 2014-03-26 · 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{6QTWYXVR5ZF4IGE7YVES6ZD7H2}

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	2026-05-18T02:43:46.926258Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f4276c5eb1ee4bc4189fc5492f647f3e90bc9bc1c209ae17c830f64aa3e2da85

Aliases

arxiv: 1403.7343 · arxiv_version: 1403.7343v4 · doi: 10.48550/arxiv.1403.7343 · pith_short_12: 6QTWYXVR5ZF4 · pith_short_16: 6QTWYXVR5ZF4IGE7 · pith_short_8: 6QTWYXVR

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/6QTWYXVR5ZF4IGE7YVES6ZD7H2 \
  | 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: f4276c5eb1ee4bc4189fc5492f647f3e90bc9bc1c209ae17c830f64aa3e2da85

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be215b33613b4b24388c4e2f011cdf3899a7eb0b7fe2d087aa660848f89d1969",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2014-03-26T18:37:57Z",
    "title_canon_sha256": "3bb7ca9e629297f3575380cda8ddc032df520139a73499637823f3e8bf1897ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.7343",
    "kind": "arxiv",
    "version": 4
  }
}