Current location - Training Enrollment Network - Mathematics courses - What does the z symbol mean?
What does the z symbol mean?
Z represents a set of integers in a set.

Integer sets include all positive integers, all negative integers and zeros, and integer sets are usually represented by z in mathematics.

Set characteristics:

1, certainty

Given a set, any element, whether it belongs to the set or not, must be one of them, and there is no ambiguity.

2. Interrelation

Any two elements in a collection are considered different, that is, each element can only appear once. Sometimes it is necessary to describe the situation where the same element appears many times. You can use multiset, where elements are allowed to appear multiple times.

3. Chaos

In a set, the state of each element is the same and the elements are out of order. You can define an order relation on the set. After defining the order relation, you can sort the elements according to the order relation. But as far as the characteristics of the set itself are concerned, there is no necessary order between elements.

Related articles
  • Is there a relationship between senior one mathematics and junior three mathematics?
  • Eighth grade math problems (100 extra high reward)
  • 20 16 senior three science mathematics
  • Our class does the composition of "Niu Ren".
  • Better life learning machine Huanggang middle school teaching video
  • Find the mathematical finale of the 2009 Tianjin senior high school entrance examination.
  • General's skill in solving the minimum problem by drinking horses at one point and two moving points.
  • What is the logarithm?
  • People's Education Press, Grade 6, Volume II of Mathematics, page 55, 10 Question, how to find the scale, process, quick! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
  • How to connect mathematical analysis, analytic geometry and higher algebra

    • copyright 2024 Training Enrollment Network All rights reserved