Pith Number

pith:LN6ZDYN6

pith:2017:LN6ZDYN63I5Y66JLT4OE4XH3JR

not attested not anchored not stored refs pending

Simple non-extensive sparsification of the hierarchical matrices

Daria Sushnikova, Ivan Oseledets

arxiv:1705.04601 v3 · 2017-05-12 · 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{LN6ZDYN63I5Y66JLT4OE4XH3JR}

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	2026-05-18T00:17:19.396070Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5b7d91e1beda3b8f792b9f1c4e5cfb4c77239a4d58b72967e97e7182786f441e

Aliases

arxiv: 1705.04601 · arxiv_version: 1705.04601v3 · doi: 10.48550/arxiv.1705.04601 · pith_short_12: LN6ZDYN63I5Y · pith_short_16: LN6ZDYN63I5Y66JL · pith_short_8: LN6ZDYN6

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/LN6ZDYN63I5Y66JLT4OE4XH3JR \
  | 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: 5b7d91e1beda3b8f792b9f1c4e5cfb4c77239a4d58b72967e97e7182786f441e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "48ad88f1ff9967e86b28b5a2df47b23fde8549568295b5db0890fac44401d30d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-05-12T14:41:04Z",
    "title_canon_sha256": "370307f97c77afed87600e75f0409c1dee4422681d17078a066714516e4c316b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.04601",
    "kind": "arxiv",
    "version": 3
  }
}