As of now, there is no scientific evidence or mathematical framework that can provide a definitive answer to the question of whether mankind will exist in an infinite number of universes. The concept of an infinite number of universes, often referred to as the multiverse, is a speculative idea that arises from certain theories in physics and cosmology.
The multiverse hypothesis suggests that there may be an immense number of universes, each with its own set of physical laws, constants, and initial conditions. Within this vast array of universes, the conditions necessary for the existence of intelligent life, such as mankind, may vary widely.
The probability of mankind existing in an infinite number of universes would depend on several factors, including the nature of the multiverse and the conditions required for the emergence and evolution of intelligent life. However, since the multiverse hypothesis is still a subject of ongoing scientific investigation and theoretical speculation, it is challenging to assign probabilities or make concrete predictions about the existence of mankind across an infinite number of universes.
It's important to note that while the multiverse hypothesis is an intriguing concept, it currently remains largely theoretical, and there is no consensus among scientists regarding its validity. Further scientific advancements and evidence are needed to gain a better understanding of the nature of the multiverse and its implications for the existence of mankind.