```markdown
# Image Description

The image is a slide with the following content:

- **Title**: "Convex Optimization M2" in red text.
- **Subtitle**: "Lecture 4" in black text.

At the bottom left corner, there is a small text: "A. d’Aspremont. Convex Optimization M2."

In the bottom right corner, there is a page indicator: "1/53".
```