Pith Number

pith:2CJZONJZ

pith:2017:2CJZONJZZQHZDLZDM35C6QHKL3

not attested not anchored not stored refs pending

Geometry-Oblivious FMM for Compressing Dense SPD Matrices

Chenhan D. Yu, George Biros, James Levitt, Severin Reiz

arxiv:1707.00164 v1 · 2017-07-01 · cs.NA · cs.MS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2CJZONJZZQHZDLZDM35C6QHKL3}

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	2026-05-18T00:41:04.270406Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d093973539cc0f91af2366fa2f40ea5eede6c1ba801262b9eaaab169ea72a29b

Aliases

arxiv: 1707.00164 · arxiv_version: 1707.00164v1 · doi: 10.48550/arxiv.1707.00164 · pith_short_12: 2CJZONJZZQHZ · pith_short_16: 2CJZONJZZQHZDLZD · pith_short_8: 2CJZONJZ

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/2CJZONJZZQHZDLZDM35C6QHKL3 \
  | 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: d093973539cc0f91af2366fa2f40ea5eede6c1ba801262b9eaaab169ea72a29b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ce724eb315fc3e1e508fdb84c3f5c3173c2e121e7121576d2217e0aa5bf9bd1",
    "cross_cats_sorted": [
      "cs.MS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2017-07-01T14:57:20Z",
    "title_canon_sha256": "db09d9a3a35e4ebdcefbae9a1578420d5246687b83f2681fb2bbf72e4eaf8862"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.00164",
    "kind": "arxiv",
    "version": 1
  }
}