math system

Coordinate axes are a set of reference lines used to determine the position of points in space. The most common ones are the horizontal axis (x-axis) and vertical axis (y-axis) in a plane Cartesian coordinate system, and they are perpendicular to each other and intersect at the origin.

Coordinate geometry is basically the analytic geometry everyone knows, mainly relying on setting up a coordinate system and turning geometric shapes into algebraic equations to calculate.

A common multiple of two or more integers is a number that all of them can divide into. The smallest one of these, excluding zero, is called the least common multiple of these integers.

The best-fit line is a straight line found using mathematical methods (like the least squares method) that best represents the trend of a set of data points, minimizing the sum of the squared errors from all the data points to the line.

The greatest common divisor is the biggest number that divides several integers. For example, the greatest common divisor of 12 and 18 is 6.

Combinatorial probability is a way of studying probabilities for problems involving a finite but large number of basic events. This approach comes from research on finite random structures in combinatorics, optimization, operations research, and computer science, and it focuses on the asymptotic properties of probabilities.

This is the magic of self-similarity. In math, self-similarity means that certain objects look similar at different scales, like an infinitely zoomed-in copy.

Natural numbers are numbers used to count things, like 0, 1, 2, 3, and so on. The smallest is 0, and there's no biggest one.

It generally refers to the whole world, including human society.

It's a mathematical concept in the field of mathematical sciences that describes the inclusion relationship between sets. It means that if every element of set A belongs to set B, then A is called a subset of B.