In this video, a person is writing on a piece of paper with a green marker. They are writing a series of numbers and mathematical equations. The person's hand is visible as they write, and the camera focuses on the paper as they continue to write. The video does not provide any context or information about the person or the location where the video was taken. The writing is not clear enough to determine what the person is writing about, but it appears to be some kind of mathematical or scientific notation. The video ends with the person finishing their writing and placing the paper down.