pith. sign in
Pith Number

pith:NVQK22PQ

pith:2014:NVQK22PQC6R52YV6UOJNXKSE7T
not attested not anchored not stored refs pending

Preconditioning in Expectation

Anup Rao, Jakub W. Pachocki, Michael B. Cohen, Rasmus Kyng, Richard Peng

arxiv:1401.6236 v1 · 2014-01-24 · cs.DS · cs.NA · math.NA

Add to your LaTeX paper
\usepackage{pith}
\pithnumber{NVQK22PQC6R52YV6UOJNXKSE7T}

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 2026-05-18T03:01:12.786188Z
Builder pith-number-builder-2026-05-17-v1
Signature Pith Ed25519 (pith-v1-2026-05) · public key
Schema pith-number/v1.0

Canonical hash

6d60ad69f017a3dd62bea392dbaa44fcf22f81e2647ea3116c1004eb76d94b24

Aliases

arxiv: 1401.6236 · arxiv_version: 1401.6236v1 · doi: 10.48550/arxiv.1401.6236 · pith_short_12: NVQK22PQC6R5 · pith_short_16: NVQK22PQC6R52YV6 · pith_short_8: NVQK22PQ
Agent API
Verify this Pith Number yourself
curl -sH 'Accept: application/ld+json' https://pith.science/pith/NVQK22PQC6R52YV6UOJNXKSE7T \
  | 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: 6d60ad69f017a3dd62bea392dbaa44fcf22f81e2647ea3116c1004eb76d94b24
Canonical record JSON
{
  "metadata": {
    "abstract_canon_sha256": "1951d7e69245e93f3afa7756c3ebf1d797cc93be1c0f460d67546c8b765887b6",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2014-01-24T01:37:37Z",
    "title_canon_sha256": "9cb14a16837d98dd8ca34221ce434944b1be0e8f33ea2cb9aa220c8d0ddd9ba1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.6236",
    "kind": "arxiv",
    "version": 1
  }
}