Because the digital electronic computer is a discrete structure, it can only deal with discrete or discrete quantitative relations. Therefore, both computer science itself and modern scientific research fields closely related to computer science and its application are faced with the problem of how to establish corresponding mathematical models for discrete structures. How to discretize the mathematical model established by continuous quantitative relationship so that it can be processed by computer.
The course of Discrete Mathematics mainly introduces the basic concepts, theories and methods of various branches of discrete mathematics. These concepts, theories and methods are widely used in digital circuits, compilation principles, data structures, operating systems, database systems, algorithm analysis and design, artificial intelligence, computer networks and other professional courses. At the same time, the training provided by this course is very beneficial to improve students' ability of generalization and abstraction, logical thinking and inductive structure, and to cultivate students' rigorous, complete and standardized scientific attitude. If you only do computer programming and computer applications and are not interested in computer theory, then perhaps discretization is useless to you.
Discrete mathematics is for those who are interested in computer science and devote themselves to computer theory research (only learning programming and application is not real computer science), and they will become scientists.
Question 2: What does this symbol mean? (Discrete Mathematics) Assignment means a:=b, and assign the value of B to A. ..
Question 3: Why is discrete mathematics called discrete mathematics? Discrete is discontinuous.
In life, we hear continuous sounds, such as human voices and bird calls. The sound stored in the computer is a discrete binary bit stream, which is discrete data obtained by sampling and then quantizing.
In our life, the images people see (not in the computer) are continuous, and the photos taken by digital cameras (the process of sampling and quantification) become photos in the computer, that is, digital photos. Photos in a computer are discrete binary bit streams. The gray values of pixels in an image (gray image) range from 0 to 255 (actually expressed in binary), that is, 0, 1, 2, 3, ..., 255, 0 represents black, 255 represents white, and there are only integers from 0 to 255, and there are no other integers or two.
Question 4: Discrete mathematics, what does this sentence mean and what is addition? Addition, subtraction, multiplication, division and so on. Except no. For example, as long as A is a real number and B is a real number, then the numbers obtained by AB addition, subtraction and multiplication are all real numbers, and they can never escape from the closed real number range.
Question 5: What are the functions in discrete mathematics? integer
Say 3.5=3.
-4.7=-5
Question 6: What is the meaning of * on {a, b}* in discrete mathematics? A score of 20 is usually expressed by a|b in mathematics, which is equivalent to the existence of c making b=ac, where a, b and c are integers.
It should be a=b if and only if 2|(a-b).
That is to say, it is equivalent to the congruence of a and b with respect to module 2, or the remainder of a and b divided by 2 is the same, or the difference between a and b can be divisible by 2.
Question 7: What does P (a) mean in discrete mathematics? P(A) means that * * * of all subsets of A is also called a power set.