Can you tell me where is the beginning point of a tennis ball? No! So when you can’t find the beginning point of a tennis ball, why do you try to find the beginning of this universe?
The mathematics is wrong. There are two types of thinking, one is spherical thinking and other is linear thinking.
The world has neither a beginning nor an end, this is spherical thinking and this is what the Vedic concept is. The Vedic understand is that three things are eternal: The universe, Divinity and Life. They have no beginning and no end, they just go in cycles.
This is the most interesting and most scientific understanding of the universe.