Add Greek (el) Matlab category and book: "Εισαγωγή στον προγραμματισμό"

[Maria-Papa]

What does this PR do?

Add resource(s)

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Description

A beginner-friendly Greek-language textbook that introduces core programming concepts using MATLAB. It guides readers through variables, control structures, loops, functions, and data visualization, with practical examples tailored for students in science and engineering. The material emphasizes hands-on learning and builds a strong foundation for solving real-world problems computationally.

Why is this valuable (or not)?

This resource offers a structured introduction to programming concepts through MATLAB, covering flow control, loops, data structures, symbolic math, and 2D/3D visualizations. It’s designed for undergraduate students and provides practical examples that build toward solving complex problems. It’s especially useful for Greek-speaking learners in STEM fields.

How do we know it's really free?

The book is published by Kallipos, a government-funded open academic publishing platform in Greece. It is distributed under the Creative Commons BY-NC-SA 4.0 license, which permits free access and non-commercial redistribution with attribution.

For book lists, is it a book? For course lists, is it a course? etc.

It is a book.

Checklist:

• Search for duplicates.
• Include author(s) and platform where appropriate.
• Put lists in alphabetical order, correct spacing.
• Add needed indications (PDF, access notes, under construction).
• Used an informative name for this pull request.

Follow-up

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[Maria-Papa]

I noticed the CONTRIBUTING file doesn’t mention formatting guidelines for resources with multiple authors. Could you please review my formatting to confirm it aligns with your expectations?

If it looks good, I suggest opening an issue to clarify how multi-author entries should be handled in future contributions.