PRACTICAL LINEAR ALGEBRA / BROWSER TOOL

Calculate matrices.
Understand the result.

Add, subtract, and multiply matrices, then inspect eigenvalues and eigenvectors. Deeper numerical and smart-manufacturing experiments remain available as featured labs.

Open matrix workbench
ORTHOGONALITY ||QTQ - I||F
LOW-RANK ERROR ||A - Ak||F

EVERYDAY LINEAR ALGEBRA

A useful calculator first

Start with routine matrix operations and an inspectable eigen-analysis workflow. When you need more depth, continue into SVD, QR, low-rank approximation, spectra, topology, and synthetic smart-fab experiments.

MATRIX WORKBENCH

Compute the routine work.

Choose a size, enter matrices A and B, then calculate. Results remain local to your browser.

A and B must have the same dimensions.

Matrix A

Matrix B

RESULT

A + B

EVIDENCE MAP

Four study tracks, one product

NLA

Stable numerical evidence

SVD, QR, low-rank approximation, spectra, and Schur complements support dimensionality reduction and model validation.

TOPOLOGY

Neighborhoods and connectivity

Open-neighborhood and connectedness thinking becomes a sensor graph with coverage and isolation diagnostics.

ECONOMICS

Scenario and trade-off reasoning

Demand, cost, exchange-rate, and shock sensitivity become an explicit operational stress-test.

PROGRAMMING

Deterministic decision logic

C sorting/search habits and Python data workflows become a stable, explainable dispatch queue.

DESIGN PRINCIPLES

Built to survive an engineering interview

No confidential fab data and no black-box numerical package are required. Core routines live in tested modules; assumptions, limitations, and outputs remain visible.

01

Traceable

Inputs, derived metrics, and visual outputs stay connected.

02

Reproducible

Seeded simulations make experiments repeatable.

03

Testable

Factorizations are checked by orthogonality and residual tests.

04

Portable

Static deployment works on GitHub Pages without a backend.