Pith Number

pith:GM6KKZNW

pith:2018:GM6KKZNWPVWF6DYOSKSE6RFNA7

not attested not anchored not stored refs pending

Cholesky decomposition of positive semidefinite matrices over commutative semirings

David Dol\v{z}an, Polona Oblak

arxiv:1807.01489 v2 · 2018-07-04 · math.RA · math.AC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GM6KKZNWPVWF6DYOSKSE6RFNA7}

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	2026-05-18T00:01:58.802830Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

333ca565b67d6c5f0f0e92a44f44ad07ebd9846f12580817802d3796f2c3bed3

Aliases

arxiv: 1807.01489 · arxiv_version: 1807.01489v2 · doi: 10.48550/arxiv.1807.01489 · pith_short_12: GM6KKZNWPVWF · pith_short_16: GM6KKZNWPVWF6DYO · pith_short_8: GM6KKZNW

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/GM6KKZNWPVWF6DYOSKSE6RFNA7 \
  | 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: 333ca565b67d6c5f0f0e92a44f44ad07ebd9846f12580817802d3796f2c3bed3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "504b28063cebc4dc24f8f6010af0ff523cf2c337f1a4daea5ff80e1d4a07b699",
    "cross_cats_sorted": [
      "math.AC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2018-07-04T09:08:56Z",
    "title_canon_sha256": "8e157cf5a935cd9bc22fcfd71c28da989304424a9109be4f0b0ba24213054f90"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.01489",
    "kind": "arxiv",
    "version": 2
  }
}