Pith Number

pith:KNH3WDF2

pith:2019:KNH3WDF2MLTRJMP6MHXEXAUMMB

not attested not anchored not stored refs pending

Complexity estimates for triangular hierarchical matrix algorithms

Steffen B\"orm

arxiv:1905.10824 v1 · 2019-05-26 · 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{KNH3WDF2MLTRJMP6MHXEXAUMMB}

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	2026-05-17T23:45:03.667350Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

534fbb0cba62e714b1fe61ee4b828c606e7474fe21fb1f4219b2b97a9d38fb24

Aliases

arxiv: 1905.10824 · arxiv_version: 1905.10824v1 · doi: 10.48550/arxiv.1905.10824 · pith_short_12: KNH3WDF2MLTR · pith_short_16: KNH3WDF2MLTRJMP6 · pith_short_8: KNH3WDF2

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/KNH3WDF2MLTRJMP6MHXEXAUMMB \
  | 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: 534fbb0cba62e714b1fe61ee4b828c606e7474fe21fb1f4219b2b97a9d38fb24

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c376112685b890657dda1f91f0f8c744799f5cd0d058bdd9dcc7a959b3b74f41",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-05-26T16:05:48Z",
    "title_canon_sha256": "ecf4476df23d48add77c32d8059dd6c7cc2716e34a143067cef33621537a72e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.10824",
    "kind": "arxiv",
    "version": 1
  }
}