Pith Number

pith:ZHKP4OQM

pith:2014:ZHKP4OQMDL6PEGS5ZBLLBMELSK

not attested not anchored not stored refs pending

Efficient arithmetic operations for rank-structured matrices based on hierarchical low-rank updates

Knut Reimer, Steffen B\"orm

arxiv:1402.5056 v6 · 2014-02-20 · 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{ZHKP4OQMDL6PEGS5ZBLLBMELSK}

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	2026-05-18T02:25:26.584513Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c9d4fe3a0c1afcf21a5dc856b0b08b92b2411c58d66534156a348632475ba82e

Aliases

arxiv: 1402.5056 · arxiv_version: 1402.5056v6 · doi: 10.48550/arxiv.1402.5056 · pith_short_12: ZHKP4OQMDL6P · pith_short_16: ZHKP4OQMDL6PEGS5 · pith_short_8: ZHKP4OQM

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/ZHKP4OQMDL6PEGS5ZBLLBMELSK \
  | 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: c9d4fe3a0c1afcf21a5dc856b0b08b92b2411c58d66534156a348632475ba82e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "daa378e6ad30817c0085b8d8345989e56611df39e9c156ea31f0086593d8cdd2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-02-20T16:15:04Z",
    "title_canon_sha256": "ca8205d48af7a62a9f44bc51534ac6d6838846f3d84516047ccbf119e9235f01"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.5056",
    "kind": "arxiv",
    "version": 6
  }
}