Pith Number

pith:DXEY2LLF

pith:2019:DXEY2LLFIR4WI2RQDZNUUFVCGM

not attested not anchored not stored refs pending

Structure-preserving diagonalization of matrices in indefinite inner product spaces

Philip Saltenberger

arxiv:1910.12307 v1 · 2019-10-27 · math.NA · cs.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{DXEY2LLFIR4WI2RQDZNUUFVCGM}

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	2026-07-05T00:15:15.592149Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1dc98d2d654479646a301e5b4a16a23332ae0acbd011dbfcc165418dae454748

Aliases

arxiv: 1910.12307 · arxiv_version: 1910.12307v1 · doi: 10.48550/arxiv.1910.12307 · pith_short_12: DXEY2LLFIR4W · pith_short_16: DXEY2LLFIR4WI2RQ · pith_short_8: DXEY2LLF

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/DXEY2LLFIR4WI2RQDZNUUFVCGM \
  | 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: 1dc98d2d654479646a301e5b4a16a23332ae0acbd011dbfcc165418dae454748

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "06ffc37796a4b44b4a767fef42fab30d966f86dbf4c9ce23419ddbe205c62b67",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-10-27T17:28:12Z",
    "title_canon_sha256": "2ce392c702d2dd6cb2108e7bdab1709ff6985519b789efd8e5d86218fe5ecff9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1910.12307",
    "kind": "arxiv",
    "version": 1
  }
}