In a parallel universe with different physical laws, it is indeed possible for mathematical constants like pi to have different values. Pi (π) is a mathematical constant that represents the ratio of a circle's circumference to its diameter in Euclidean geometry, as we understand it in our universe.
However, in a hypothetical parallel universe where the laws of mathematics or geometry differ, it is conceivable that the value of pi could be different for perfect circles in that universe. The concept of a perfect circle may still exist, but the mathematical relationship between the circumference and diameter may be different, resulting in a distinct value for pi.
It's important to note that the exact nature of parallel universes remains purely speculative and hypothetical, as there is currently no scientific evidence or consensus on their existence. The idea of a parallel universe is often explored in works of fiction and theoretical physics, but until empirical evidence emerges, we cannot make definitive statements about the properties of such universes.