Pith Number

pith:2CWJ5BU4

pith:2017:2CWJ5BU4G6PHC3GU3SG46LAK26

not attested not anchored not stored refs pending

randUTV: A blocked randomized algorithm for computing a rank-revealing UTV factorization

Gregorio Quintana-Orti, Nathan Heavner, Per-Gunnar Martinsson

arxiv:1703.00998 v1 · 2017-03-03 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2CWJ5BU4G6PHC3GU3SG46LAK26}

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	2026-05-18T00:49:37.283407Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d0ac9e869c379e716cd4dc8dcf2c0ad7ae02858fd034a59b44ab53b02750e088

Aliases

arxiv: 1703.00998 · arxiv_version: 1703.00998v1 · doi: 10.48550/arxiv.1703.00998 · pith_short_12: 2CWJ5BU4G6PH · pith_short_16: 2CWJ5BU4G6PHC3GU · pith_short_8: 2CWJ5BU4

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/2CWJ5BU4G6PHC3GU3SG46LAK26 \
  | 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: d0ac9e869c379e716cd4dc8dcf2c0ad7ae02858fd034a59b44ab53b02750e088

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f6189b2e05bfff9ec317887f88f7b59117aa000eb03941db178a3118a6f8bc3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-03-03T00:20:37Z",
    "title_canon_sha256": "bd7e242e5ef57f2cf70e11cff03e9eaebc456505a6f07e736270969fc11f87f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.00998",
    "kind": "arxiv",
    "version": 1
  }
}