Pith Number

pith:GCLSJ7SA

pith:2019:GCLSJ7SAMTCZ7MTUK4NOV27BEC

not attested not anchored not stored refs pending

Two nondeterministic positive definiteness tests for unidiagonal integral matrices

Andrzej Mr\'oz

arxiv:1906.12312 v1 · 2019-06-28 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GCLSJ7SAMTCZ7MTUK4NOV27BEC}

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	2026-05-17T23:41:58.698903Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

309724fe4064c59fb274571aeaebe12091bf45563dd828dc2b7927f894b07e66

Aliases

arxiv: 1906.12312 · arxiv_version: 1906.12312v1 · doi: 10.48550/arxiv.1906.12312 · pith_short_12: GCLSJ7SAMTCZ · pith_short_16: GCLSJ7SAMTCZ7MTU · pith_short_8: GCLSJ7SA

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/GCLSJ7SAMTCZ7MTUK4NOV27BEC \
  | 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: 309724fe4064c59fb274571aeaebe12091bf45563dd828dc2b7927f894b07e66

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d44b8388754140beaba205a6eb09784a74c8a16c3147b89c741c4fb99d5432b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-06-28T17:18:15Z",
    "title_canon_sha256": "f9977175d19ace6b7f84a28373216b958f27618d62d59ff1757ca16edbf30559"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.12312",
    "kind": "arxiv",
    "version": 1
  }
}