Pith Number

pith:PQUCKXUI

pith:2016:PQUCKXUIEOJ63FRZPDAUZJIQYJ

not attested not anchored not stored refs pending

Distributed-memory Hierarchical Interpolative Factorization

Lexing Ying, Yingzhou Li

arxiv:1607.00346 v4 · 2016-07-01 · math.NA · cs.MS · 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{PQUCKXUIEOJ63FRZPDAUZJIQYJ}

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	2026-05-18T00:42:44.323160Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c28255e882393ed963978c14ca510c24698f2a5afff45863a217378c4eafacc

Aliases

arxiv: 1607.00346 · arxiv_version: 1607.00346v4 · doi: 10.48550/arxiv.1607.00346 · pith_short_12: PQUCKXUIEOJ6 · pith_short_16: PQUCKXUIEOJ63FRZ · pith_short_8: PQUCKXUI

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/PQUCKXUIEOJ63FRZPDAUZJIQYJ \
  | 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: 7c28255e882393ed963978c14ca510c24698f2a5afff45863a217378c4eafacc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77838f990cf0cb89811f7aee4579158528d66ee3e55e7b060d58f9cf38f3a123",
    "cross_cats_sorted": [
      "cs.MS",
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2016-07-01T18:37:34Z",
    "title_canon_sha256": "7b8ae2c38ad10034cf26973e36ce3ca41451cc9ce52a2e8d55c2d8720c35dbae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1607.00346",
    "kind": "arxiv",
    "version": 4
  }
}