This black t-shirt features a clever and humorous design combining math and positive thinking. The design includes the equation "f (x) = [x]", referencing the floor function, followed by the words "AVOID NEGATIVITY" in bold, white letters. The shirt is made of comfortable fabric and has a classic fit with short sleeves. Perfect for math enthusiasts, teachers, or anyone who appreciates a smart and lighthearted message. This shirt is a fun way to spread positivity and showcase your love for mathematics. Show off your nerdy side with this creative and stylish t-shirt!