Mathematician, old man, white hair, glasses, beard, brown suit, white shirt, black tie, chalk in hand, writing on blackboard, equations and formulas, geometric shapes, 3/4 composition, soft lighting, cinematic atmosphere, realistic texture, shallow depth of field.
Mathematician, old man, white hair, glasses, beard, brown suit, white shirt, black tie, chalk in hand, writing on blackboard, equations and formulas, geometric shapes, 3/4 composition, soft lighting, cinematic atmosphere, realistic texture, shallow depth of field.