Pith Number

pith:B3SFQYE5

pith:2018:B3SFQYE5KNJ3QAYP5E6TFRCGVS

not attested not anchored not stored refs pending

The PowerURV algorithm for computing rank-revealing full factorizations

Abinand Gopal, Per-Gunnar Martinsson

arxiv:1812.06007 v1 · 2018-12-14 · math.NA · cs.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{B3SFQYE5KNJ3QAYP5E6TFRCGVS}

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	2026-05-17T23:58:15.793726Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0ee458609d5353b8030fe93d32c446acbbfe0fd9ea144355af78d866c0b6c894

Aliases

arxiv: 1812.06007 · arxiv_version: 1812.06007v1 · doi: 10.48550/arxiv.1812.06007 · pith_short_12: B3SFQYE5KNJ3 · pith_short_16: B3SFQYE5KNJ3QAYP · pith_short_8: B3SFQYE5

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/B3SFQYE5KNJ3QAYP5E6TFRCGVS \
  | 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: 0ee458609d5353b8030fe93d32c446acbbfe0fd9ea144355af78d866c0b6c894

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b3424d4d6177ca278271ecd85169fc0b482c86a2abc4e0bd51464a5f3a690efe",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-12-14T16:22:18Z",
    "title_canon_sha256": "73704b391ea3dbb298fd290ef64c18e2623d61096d28345bd89723ff7e151857"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.06007",
    "kind": "arxiv",
    "version": 1
  }
}