Pith Number

pith:A32ZKR5D

pith:2017:A32ZKR5DTBJUPRUNG4WRUHWZU6

not attested not anchored not stored refs pending

Positive approximations of the inverse of fractional powers of SPD M-matrices

Stanislav Harizanov, Svetozar Margenov

arxiv:1706.07620 v1 · 2017-06-23 · 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{A32ZKR5DTBJUPRUNG4WRUHWZU6}

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	2026-05-18T00:41:48.605027Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06f59547a3985347c68d372d1a1ed9a799fe21e6f264f6d31a72d6cd7f2d7a50

Aliases

arxiv: 1706.07620 · arxiv_version: 1706.07620v1 · doi: 10.48550/arxiv.1706.07620 · pith_short_12: A32ZKR5DTBJU · pith_short_16: A32ZKR5DTBJUPRUN · pith_short_8: A32ZKR5D

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/A32ZKR5DTBJUPRUNG4WRUHWZU6 \
  | 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: 06f59547a3985347c68d372d1a1ed9a799fe21e6f264f6d31a72d6cd7f2d7a50

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b11ffed4dd1d4c8edc65fb7156a9d8320331b871a952bdbb667f823db59d764d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-06-23T09:58:24Z",
    "title_canon_sha256": "c0a34fa1d93c31a13d396d019763a08500d615135f4d61ac305f0e0028d34d5e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.07620",
    "kind": "arxiv",
    "version": 1
  }
}