The video shows a person writing on a piece of paper with a blue pen. The person is writing mathematical equations and functions. The camera is focused on the paper and the person's hand as they write. The person's hand is steady, and they appear to be writing with confidence. The paper is white, and the ink is blue. The person's hand is visible in the frame, and they are wearing a ring on their finger. The video is shot from a close-up angle, and the background is blurred.