Are we living in three dimensions? Is it living in four dimensions?

A. 1

In terms of space, we live in a three-dimensional space.

Gentleman 8 years ago 0

OK

A. 2

In physics, we treat this existing space-time as a four-dimensional 'space three-dimensional + time one-dimensional'.
Modern standard dynamics, electromagnetism, and quantum field theories based on special relativity are described by Minkowski constructions in three dimensions of space and one dimension of time. The general relativity theory, which extends the special relativity to describe gravity, is described by introducing a 'curve' into this four-dimensional construction. As such, in the basic framework of modern physics, this construction, in which we exist, is treated as a four-dimensional 'space three-dimensional + time one-dimensional'.
https://ko.wikipedia.org/wiki/%EC%82%AC%EC%B0%A8%E...

Gentleman 8 years ago 0

OK

A. 3

The idea of dimension is mathematically just adding one virtual axis.
Now in mathematics, we can calculate up to n-dimensions.
And not to explain what really exists, but to continue to add axes in one-dimensional lines, two-dimensional planes, three-dimensional spaces, and so on, (1, 2, 3, ...) we just do calculations by continuously being numerically representable in this way.

Gentleman 8 years ago 0

OK