(digital collage, highly detailed, 8K, photorealistic rendering, conceptual art) This digitally created collage features four panels, each showcasing a close-up of a woman’s face with mathematical equations superimposed on her forehead. The woman has fair skin, shoulder-length blonde hair, and wears a dark-colored top. In the top-left panel, she has a neutral expression, with the equations "y = x² + eˣ" and "V = (4/3)πr³" written in white against a black background, creating a surreal, intellectual atmosphere. In the top-right panel, her expression is slightly confused, with the equations "V = (4/3)πr³" and "x² + y² = 1" adding a hint of complexity. The bottom-left panel shows her contemplative expression, with the equations "y = x² + eˣ" and "x² + y² = 1", evoking deeper thought. In the bottom-right panel, her serious expression is paired with the equations "y = x² + eˣ" and "x² + y² = 1", emphasizing the gravity of the situation. The white equations against the black backdrop give the image a minimalist yet humorous, surreal quality, blending