Pith Number

pith:HENFQZIK

pith:2019:HENFQZIK3UVT2EZDMGM6AATJNN

not attested not anchored not stored refs pending

Sign Patterns of Orthogonal Matrices and the Strong Inner Product Property

Bryan A. Curtis, Bryan L. Shader

arxiv:1907.09982 v1 · 2019-07-23 · 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{HENFQZIK3UVT2EZDMGM6AATJNN}

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	2026-05-17T23:39:49.502902Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

391a58650add2b3d13236199e002696b6ed1dcb9f2d9c440ee8e57df8bbd3b60

Aliases

arxiv: 1907.09982 · arxiv_version: 1907.09982v1 · doi: 10.48550/arxiv.1907.09982 · pith_short_12: HENFQZIK3UVT · pith_short_16: HENFQZIK3UVT2EZD · pith_short_8: HENFQZIK

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/HENFQZIK3UVT2EZDMGM6AATJNN \
  | 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: 391a58650add2b3d13236199e002696b6ed1dcb9f2d9c440ee8e57df8bbd3b60

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d3e08c1d3fb906245fbd2bc65b26ac71c4f3794f9526dffa77676a4169f4bebe",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-07-23T16:22:28Z",
    "title_canon_sha256": "a52d7560a062b74321ea521264c88295a1cd49b421cb2a29ea244d8088e25830"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.09982",
    "kind": "arxiv",
    "version": 1
  }
}